LPAB Diploma in Law cheat sheet

Actus reus requires a voluntary physical element; omissions attract liability only where a duty to act is imposed by statute, contract, relationship, assumption of care or creation of danger.

Mens rea standards in order of severity: intention, knowledge, recklessness, negligence; He Kaw Teh principles presume mens rea unless statute clearly excludes it.

Murder requires an act or omission causing death with intent to kill, intent to cause grievous bodily harm, or reckless indifference to life; voluntary manslaughter mitigates via provocation or substantial impairment.

Temporal coincidence rule: the mens rea must exist at the time of the act causing the prohibited consequence (Thabo Meli exception applies to a continuing series of acts).

Strict and absolute liability offences dispense with mens rea; the defence of honest and reasonable mistake of fact is available for strict but not absolute liability.

Self-defence requires a reasonable belief in the need to defend and a proportionate response; excessive force in the home context is assessed under statutory modifications in most jurisdictions.

Police may arrest without warrant where a person is committing or has committed an offence; a search incidental to lawful arrest is limited to the person and immediate surroundings for safety and evidence.

The prosecution bears the legal burden of proving every element beyond reasonable doubt; the accused bears an evidential burden for defences such as provocation, duress and necessity.

Negligence elements: duty of care, breach (reasonable person standard, calculus of risk in s 5B Civil Liability Acts), causation (necessary condition plus scope of liability) and damage that is not too remote.

Duty of care is established by salient features (foreseeability, proximity, policy) rather than a single test; pure economic loss requires known reliance or assumption of responsibility.

Professional standard of care is that of the ordinary skilled member of the profession (Bolam/Bolitho); a doctor's duty to warn of material risks is governed by the Civil Liability Act provisions.

Defences to negligence: contributory negligence (apportioned damages), voluntary assumption of risk (obvious risk, no duty to warn under CLA), and illegality.

Trespass to land requires unauthorised entry; trespass to person includes battery (direct contact), assault (apprehension of imminent contact) and false imprisonment (total deprivation of liberty).

Private nuisance protects use and enjoyment of land; remedies include damages and injunction; the tort is not available for mere personal discomfort unless substantial and unreasonable.

Defamation elements: a defamatory imputation published to a third party identifying the plaintiff; defences include truth, contextual truth, honest opinion, qualified privilege and triviality.

Vicarious liability requires an employment relationship (or akin relationship) and a tort committed in the course of employment; independent contractors generally do not create vicarious liability.

Formation requires offer, acceptance, consideration and intention to create legal relations; acceptance must be communicated and mirror the offer (postal acceptance rule applies to letters).

Consideration must be bargained for and sufficient but need not be adequate; past consideration is not good consideration; part payment of a debt is not consideration (Foakes v Beer).

Certainty and completeness: vague or illusory promises may be unenforceable, though courts sever or give a reasonable meaning where possible.

Terms are classified as conditions, warranties and intermediate terms; breach of a condition permits termination plus damages, breach of a warranty permits damages only.

Parol evidence rule limits extrinsic evidence to contradict a written contract, but exceptions permit evidence of implied terms, collateral contracts and rectification.

Estoppel (Waltons Stores) requires a clear assumption, induced reliance, detriment and unconscionability; it may create rights where consideration is absent.

Vitiating factors: misrepresentation, duress, undue influence, unconscionable conduct and mistake; remedies include rescission (restitutio in integrum) and damages.

Frustration discharges a contract where an unforeseen event makes performance impossible or radically different; the statutory scheme apportions losses on frustration.

Torrens system: registration confers indefeasible title subject to exceptions including fraud, prior registered interests, easements and statutory overriding interests.

Old system title requires a chain of title; a bona fide purchaser for value without notice takes free of prior equitable interests.

Co-ownership: joint tenants have the right of survivorship and unity of title, time, interest and possession; tenants in common hold distinct undivided shares.

Leases require exclusive possession, certainty of term and rent (unless dispensed with); a licence confers personal permission only and creates no proprietary interest.

Easements require dominant and servient tenements, a benefit to the dominant land, and cannot be exclusive or vague; prescriptive easements require long user.

Covenants: the burden of a restrictive covenant may run with freehold land at law under Tulk v Moxhay principles; the burden of positive covenants generally does not run.

Mortgages: a registered mortgagee may exercise power of sale after default and notice; the mortgagee must act in good faith and take reasonable care to obtain market value.

Native title (Mabo, Native Title Act 1993) survives where not extinguished by an inconsistent grant; extinguishment requires clear and plain intention.

Maxims include: he who seeks equity must do equity; he who comes to equity must come with clean hands; equity looks to intent rather than form; delay defeats equity.

Fiduciary duties comprise no conflict of interest, no profit from position and no unauthorised benefit; remedies include account of profits, constructive trust and rescission.

A constructive trust arises by operation of law where unconscionability or breach of fiduciary duty requires it (e.g. Barnes v Addy first and second limbs).

Tracing in equity follows property into its proceeds and into mixed funds; the lowest intermediate balance rule applies to bank accounts.

Specific performance is available where damages are inadequate and the contract is certain, the plaintiff ready and willing, and no discretionary bar applies.

Injunctions: prohibitory, mandatory and quia timet; interlocutory injunctions require a serious question to be tried and the balance of convenience (Beecham).

Resulting trusts arise from contributions to purchase price or failure of an express trust; a presumption of advancement may rebut the presumption of resulting trust.

Doctrine of part performance requires acts unequivocally referable to the contract and acts by the party seeking relief.

Judicial review requires a decision by an officer of the Commonwealth or State under an enactment, and a person with standing (special interest beyond the general public).

Jurisdictional error is reviewable; non-jurisdictional error of law on the face of the record may be reviewable under the ADJR Act and State equivalents.

Grounds of review: procedural fairness, relevant/irrelevant considerations, improper purpose, bad faith, inflexible policy, unreasonableness, no evidence and error of law.

Procedural fairness requires a hearing rule (notice, opportunity to respond) and a bias rule (actual or apprehended bias under the double might test).

The ADJR Act provides statutory review of decisions; the Constitution s 75(v) and s 39B Judiciary Act preserve entrenched judicial review for Commonwealth officers.

Ombudsman, FOI, merits review tribunals (AAT, NCAT) and the Administrative Review Council provide non-judicial accountability mechanisms.

Delegated legislation is invalid if beyond the regulation-making power, uncertain, or inconsistent with the enabling Act; disallowance procedures apply in Parliament.

Privative clauses are construed strictly and cannot exclude jurisdiction for jurisdictional error (Plaintiff S157/2002).

The Commonwealth Constitution is contained in s 9 of the Commonwealth of Australia Constitution Act 1900 (Imp); it establishes a federal system with enumerated Commonwealth powers.

Section 51 heads of power are interpreted broadly (Engineers' case); incidental powers under s 51(xxxix) support legislation on matters incidental to enumerated powers.

Section 92 guarantees freedom of interstate trade, commerce and intercourse among the States; s 117 prohibits discrimination based on state residence.

Section 109 provides that a State law is invalid to the extent of inconsistency with a Commonwealth law; tests include direct inconsistency and covering the field.

The separation of judicial power precludes courts exercising non-judicial functions and prevents Parliament conferring judicial power on non-courts (Boilermakers).

Implied freedom of political communication (Lange) limits laws burdening communication on political matters; the test is structured proportionality.

Section 51(xxxi) requires just terms for acquisition of property by the Commonwealth; State acquisitions are governed by State constitutional provisions.

State constitutions are amendable by State Parliaments subject to manner and form provisions (s 6 Australia Acts); the Australia Acts also limit State extraterritoriality.

A court's jurisdiction may be territorial, subject-matter based, or based on the parties; service outside the jurisdiction requires leave or a statutory gateway.

A statement of claim must disclose a reasonable cause of action and plead material facts, not evidence; a defence must respond to each allegation and plead affirmatively.

Summary judgment or strike-out is available where the claim is frivolous, vexatious or an abuse of process, or discloses no reasonable cause of action.

Discovery and interrogatories are limited to documents relevant to issues in dispute; privilege (legal professional privilege, without prejudice) protects certain communications.

Case management powers include directions, timetabling, costs orders, and dismissal for want of prosecution; the overriding purpose is just, quick and cheap resolution.

Settlement: Calderbank offers and offers of compromise under the rules attract costs consequences where the offer is not beaten at judgment.

Costs follow the event; the court may depart for misconduct, offers, or public interest; security for costs may be ordered against impecunious plaintiffs.

Appeals require leave where the amount is below the statutory threshold; the appellate court generally corrects error, not rehear the case de novo.

Relevance is the threshold test; evidence must be relevant to a fact in issue, and the court may exclude relevant evidence under the unfair prejudice discretion.

Hearsay is an out-of-court assertion used to prove the truth of its contents; exceptions include admissions, business records, dying declarations and res gestae.

Opinion evidence is inadmissible unless the witness is an expert with specialised knowledge based on training, study or experience (s 79 uniform Evidence Acts).

Tendency and coincidence evidence require significant probative value and are excluded where unfair prejudice outweighs it; the tests differ between civil and criminal proceedings.

The credibility rule excludes evidence solely going to credibility; exceptions apply for prior consistent or inconsistent statements and expert evidence on credibility.

Privilege: legal professional privilege, client legal privilege, public interest immunity, and the privilege against self-incrimination; s 128 certificates apply in court.

Burden and standard of proof: the prosecution must prove guilt beyond reasonable doubt; the accused bears the evidential burden for defences and the legal burden for insanity.

The rule in Browne v Dunn requires a party to put its case to opposing witnesses; failure may entitle the witness to be recalled or attract adverse comment.

Solicitors owe duties to the court, to clients, to third parties and to the administration of justice; the duty to the court prevails over the duty to the client.

Confidentiality protects all client information; legal professional privilege protects confidential communications for legal advice or litigation; both survive the retainer.

A conflict of interest arises where the solicitor's interest or another client's interest conflicts with the client's; informed consent may permit a conflict but not a conflict of duty and duty in litigation.

A solicitor must not mislead the court, must disclose adverse authorities, and must correct any inadvertent misleading statement.

Trust account rules: client money must be held in a trust account, reconciled monthly, audited annually, and not mixed with office money.

Costs disclosure must be made before or at the time of engagement; costs agreements may be conditional but not excessive; billing must be clear and itemised.

Advertising and touting are regulated; solicitors must not engage in conduct that is likely to diminish public confidence in the profession.

Continuing professional development, practising certificates, and mandatory disclosure of disciplinary matters are required for practice.

A company is a separate legal entity (Salomon v Salomon) with perpetual succession, capacity to sue and be sued, and limited liability for members.

Directors' duties: care and diligence, good faith, proper purpose, no improper use of position or information, and avoidance of conflicts of interest (ss 180-183 Corporations Act).

Business judgment rule (s 180(2)) protects directors who act in good faith, on an informed basis, without material personal interest and rationally believing the judgment is in the best interests of the company.

Insolvent trading (s 588G) imposes liability on directors where the company incurs a debt while insolvent and there are reasonable grounds for suspecting insolvency.

Shareholder remedies include the statutory derivative action (Part 2F.1A), oppression (s 232), and winding up on just and equitable grounds (s 461).

Corporations can raise capital through shares and debentures; disclosure documents (prospectus) are required unless an exemption applies.

Takeovers are regulated by the Corporations Act and the Takeovers Panel; the Eggleston principles require equal opportunity and an efficient market.

Directors may be disqualified by ASIC or the court; phoenix activity is targeted by asset-stripping and director penalty provisions.

Primary sources: legislation, delegated legislation and case law; secondary sources: textbooks, journal articles, dictionaries and encyclopaedias.

Case citation format: party names (year) volume reporter starting page (court); authorised reports (CLR, FCR, NSWLR) are preferred over unauthorised reports.

Statutory interpretation begins with the text, read in context and purpose (Acts Interpretation Act); extrinsic materials may be considered under s 15AB.

The doctrine of precedent: ratio decidendi binds lower courts in the same hierarchy; obiter dicta is persuasive; High Court decisions bind all Australian courts.

The IRAC method structures legal writing: Issue, Rule, Application, Conclusion; case notes should identify material facts, issue, holding and reasoning.

Legal research databases include AustLII, LexisNexis, Westlaw and Jade; citators (CaseBase, KeyCite) verify the subsequent history of authorities.

Plain English drafting favours short sentences, active voice and defined terms; legislation should be construed to avoid absurdity and to promote purpose.

Court hierarchy: High Court, Federal Court and State Supreme Courts, District/County Courts, Local/Magistrates Courts; appeals follow statutory pathways.

Actus reus requires a voluntary physical element; omissions attract liability only where a duty to act is imposed by statute, contract, relationship, assumption of care or creation of danger.

Mens rea standards in order of severity: intention, knowledge, recklessness, negligence; He Kaw Teh principles presume mens rea unless statute clearly excludes it.

Murder requires an act or omission causing death with intent to kill, intent to cause grievous bodily harm, or reckless indifference to life; voluntary manslaughter mitigates via provocation or substantial impairment.

Temporal coincidence rule: the mens rea must exist at the time of the act causing the prohibited consequence (Thabo Meli exception applies to a continuing series of acts).

Strict and absolute liability offences dispense with mens rea; the defence of honest and reasonable mistake of fact is available for strict but not absolute liability.

Self-defence requires a reasonable belief in the need to defend and a proportionate response; excessive force in the home context is assessed under statutory modifications in most jurisdictions.

Police may arrest without warrant where a person is committing or has committed an offence; a search incidental to lawful arrest is limited to the person and immediate surroundings for safety and evidence.

The prosecution bears the legal burden of proving every element beyond reasonable doubt; the accused bears an evidential burden for defences such as provocation, duress and necessity.

Negligence elements: duty of care, breach (reasonable person standard, calculus of risk in s 5B Civil Liability Acts), causation (necessary condition plus scope of liability) and damage that is not too remote.

Duty of care is established by salient features (foreseeability, proximity, policy) rather than a single test; pure economic loss requires known reliance or assumption of responsibility.

Professional standard of care is that of the ordinary skilled member of the profession (Bolam/Bolitho); a doctor's duty to warn of material risks is governed by the Civil Liability Act provisions.

Defences to negligence: contributory negligence (apportioned damages), voluntary assumption of risk (obvious risk, no duty to warn under CLA), and illegality.

Trespass to land requires unauthorised entry; trespass to person includes battery (direct contact), assault (apprehension of imminent contact) and false imprisonment (total deprivation of liberty).

Private nuisance protects use and enjoyment of land; remedies include damages and injunction; the tort is not available for mere personal discomfort unless substantial and unreasonable.

Defamation elements: a defamatory imputation published to a third party identifying the plaintiff; defences include truth, contextual truth, honest opinion, qualified privilege and triviality.

Vicarious liability requires an employment relationship (or akin relationship) and a tort committed in the course of employment; independent contractors generally do not create vicarious liability.

Formation requires offer, acceptance, consideration and intention to create legal relations; acceptance must be communicated and mirror the offer (postal acceptance rule applies to letters).

Consideration must be bargained for and sufficient but need not be adequate; past consideration is not good consideration; part payment of a debt is not consideration (Foakes v Beer).

Certainty and completeness: vague or illusory promises may be unenforceable, though courts sever or give a reasonable meaning where possible.

Terms are classified as conditions, warranties and intermediate terms; breach of a condition permits termination plus damages, breach of a warranty permits damages only.

Parol evidence rule limits extrinsic evidence to contradict a written contract, but exceptions permit evidence of implied terms, collateral contracts and rectification.

Estoppel (Waltons Stores) requires a clear assumption, induced reliance, detriment and unconscionability; it may create rights where consideration is absent.

Vitiating factors: misrepresentation, duress, undue influence, unconscionable conduct and mistake; remedies include rescission (restitutio in integrum) and damages.

Frustration discharges a contract where an unforeseen event makes performance impossible or radically different; the statutory scheme apportions losses on frustration.

Torrens system: registration confers indefeasible title subject to exceptions including fraud, prior registered interests, easements and statutory overriding interests.

Old system title requires a chain of title; a bona fide purchaser for value without notice takes free of prior equitable interests.

Co-ownership: joint tenants have the right of survivorship and unity of title, time, interest and possession; tenants in common hold distinct undivided shares.

Leases require exclusive possession, certainty of term and rent (unless dispensed with); a licence confers personal permission only and creates no proprietary interest.

Easements require dominant and servient tenements, a benefit to the dominant land, and cannot be exclusive or vague; prescriptive easements require long user.

Covenants: the burden of a restrictive covenant may run with freehold land at law under Tulk v Moxhay principles; the burden of positive covenants generally does not run.

Mortgages: a registered mortgagee may exercise power of sale after default and notice; the mortgagee must act in good faith and take reasonable care to obtain market value.

Native title (Mabo, Native Title Act 1993) survives where not extinguished by an inconsistent grant; extinguishment requires clear and plain intention.

Maxims include: he who seeks equity must do equity; he who comes to equity must come with clean hands; equity looks to intent rather than form; delay defeats equity.

Fiduciary duties comprise no conflict of interest, no profit from position and no unauthorised benefit; remedies include account of profits, constructive trust and rescission.

A constructive trust arises by operation of law where unconscionability or breach of fiduciary duty requires it (e.g. Barnes v Addy first and second limbs).

Tracing in equity follows property into its proceeds and into mixed funds; the lowest intermediate balance rule applies to bank accounts.

Specific performance is available where damages are inadequate and the contract is certain, the plaintiff ready and willing, and no discretionary bar applies.

Injunctions: prohibitory, mandatory and quia timet; interlocutory injunctions require a serious question to be tried and the balance of convenience (Beecham).

Resulting trusts arise from contributions to purchase price or failure of an express trust; a presumption of advancement may rebut the presumption of resulting trust.

Doctrine of part performance requires acts unequivocally referable to the contract and acts by the party seeking relief.

Judicial review requires a decision by an officer of the Commonwealth or State under an enactment, and a person with standing (special interest beyond the general public).

Jurisdictional error is reviewable; non-jurisdictional error of law on the face of the record may be reviewable under the ADJR Act and State equivalents.

Grounds of review: procedural fairness, relevant/irrelevant considerations, improper purpose, bad faith, inflexible policy, unreasonableness, no evidence and error of law.

Procedural fairness requires a hearing rule (notice, opportunity to respond) and a bias rule (actual or apprehended bias under the double might test).

The ADJR Act provides statutory review of decisions; the Constitution s 75(v) and s 39B Judiciary Act preserve entrenched judicial review for Commonwealth officers.

Ombudsman, FOI, merits review tribunals (AAT, NCAT) and the Administrative Review Council provide non-judicial accountability mechanisms.

Delegated legislation is invalid if beyond the regulation-making power, uncertain, or inconsistent with the enabling Act; disallowance procedures apply in Parliament.

Privative clauses are construed strictly and cannot exclude jurisdiction for jurisdictional error (Plaintiff S157/2002).

The Commonwealth Constitution is contained in s 9 of the Commonwealth of Australia Constitution Act 1900 (Imp); it establishes a federal system with enumerated Commonwealth powers.

Section 51 heads of power are interpreted broadly (Engineers' case); incidental powers under s 51(xxxix) support legislation on matters incidental to enumerated powers.

Section 92 guarantees freedom of interstate trade, commerce and intercourse among the States; s 117 prohibits discrimination based on state residence.

Section 109 provides that a State law is invalid to the extent of inconsistency with a Commonwealth law; tests include direct inconsistency and covering the field.

The separation of judicial power precludes courts exercising non-judicial functions and prevents Parliament conferring judicial power on non-courts (Boilermakers).

Implied freedom of political communication (Lange) limits laws burdening communication on political matters; the test is structured proportionality.

Section 51(xxxi) requires just terms for acquisition of property by the Commonwealth; State acquisitions are governed by State constitutional provisions.

State constitutions are amendable by State Parliaments subject to manner and form provisions (s 6 Australia Acts); the Australia Acts also limit State extraterritoriality.

A court's jurisdiction may be territorial, subject-matter based, or based on the parties; service outside the jurisdiction requires leave or a statutory gateway.

A statement of claim must disclose a reasonable cause of action and plead material facts, not evidence; a defence must respond to each allegation and plead affirmatively.

Summary judgment or strike-out is available where the claim is frivolous, vexatious or an abuse of process, or discloses no reasonable cause of action.

Discovery and interrogatories are limited to documents relevant to issues in dispute; privilege (legal professional privilege, without prejudice) protects certain communications.

Case management powers include directions, timetabling, costs orders, and dismissal for want of prosecution; the overriding purpose is just, quick and cheap resolution.

Settlement: Calderbank offers and offers of compromise under the rules attract costs consequences where the offer is not beaten at judgment.

Costs follow the event; the court may depart for misconduct, offers, or public interest; security for costs may be ordered against impecunious plaintiffs.

Appeals require leave where the amount is below the statutory threshold; the appellate court generally corrects error, not rehear the case de novo.

Relevance is the threshold test; evidence must be relevant to a fact in issue, and the court may exclude relevant evidence under the unfair prejudice discretion.

Hearsay is an out-of-court assertion used to prove the truth of its contents; exceptions include admissions, business records, dying declarations and res gestae.

Opinion evidence is inadmissible unless the witness is an expert with specialised knowledge based on training, study or experience (s 79 uniform Evidence Acts).

Tendency and coincidence evidence require significant probative value and are excluded where unfair prejudice outweighs it; the tests differ between civil and criminal proceedings.

The credibility rule excludes evidence solely going to credibility; exceptions apply for prior consistent or inconsistent statements and expert evidence on credibility.

Privilege: legal professional privilege, client legal privilege, public interest immunity, and the privilege against self-incrimination; s 128 certificates apply in court.

Burden and standard of proof: the prosecution must prove guilt beyond reasonable doubt; the accused bears the evidential burden for defences and the legal burden for insanity.

The rule in Browne v Dunn requires a party to put its case to opposing witnesses; failure may entitle the witness to be recalled or attract adverse comment.

Solicitors owe duties to the court, to clients, to third parties and to the administration of justice; the duty to the court prevails over the duty to the client.

Confidentiality protects all client information; legal professional privilege protects confidential communications for legal advice or litigation; both survive the retainer.

A conflict of interest arises where the solicitor's interest or another client's interest conflicts with the client's; informed consent may permit a conflict but not a conflict of duty and duty in litigation.

A solicitor must not mislead the court, must disclose adverse authorities, and must correct any inadvertent misleading statement.

Trust account rules: client money must be held in a trust account, reconciled monthly, audited annually, and not mixed with office money.

Costs disclosure must be made before or at the time of engagement; costs agreements may be conditional but not excessive; billing must be clear and itemised.

Advertising and touting are regulated; solicitors must not engage in conduct that is likely to diminish public confidence in the profession.

Continuing professional development, practising certificates, and mandatory disclosure of disciplinary matters are required for practice.

A company is a separate legal entity (Salomon v Salomon) with perpetual succession, capacity to sue and be sued, and limited liability for members.

Directors' duties: care and diligence, good faith, proper purpose, no improper use of position or information, and avoidance of conflicts of interest (ss 180-183 Corporations Act).

Business judgment rule (s 180(2)) protects directors who act in good faith, on an informed basis, without material personal interest and rationally believing the judgment is in the best interests of the company.

Insolvent trading (s 588G) imposes liability on directors where the company incurs a debt while insolvent and there are reasonable grounds for suspecting insolvency.

Shareholder remedies include the statutory derivative action (Part 2F.1A), oppression (s 232), and winding up on just and equitable grounds (s 461).

Corporations can raise capital through shares and debentures; disclosure documents (prospectus) are required unless an exemption applies.

Takeovers are regulated by the Corporations Act and the Takeovers Panel; the Eggleston principles require equal opportunity and an efficient market.

Directors may be disqualified by ASIC or the court; phoenix activity is targeted by asset-stripping and director penalty provisions.

Primary sources: legislation, delegated legislation and case law; secondary sources: textbooks, journal articles, dictionaries and encyclopaedias.

Case citation format: party names (year) volume reporter starting page (court); authorised reports (CLR, FCR, NSWLR) are preferred over unauthorised reports.

Statutory interpretation begins with the text, read in context and purpose (Acts Interpretation Act); extrinsic materials may be considered under s 15AB.

The doctrine of precedent: ratio decidendi binds lower courts in the same hierarchy; obiter dicta is persuasive; High Court decisions bind all Australian courts.

The IRAC method structures legal writing: Issue, Rule, Application, Conclusion; case notes should identify material facts, issue, holding and reasoning.

Legal research databases include AustLII, LexisNexis, Westlaw and Jade; citators (CaseBase, KeyCite) verify the subsequent history of authorities.

Plain English drafting favours short sentences, active voice and defined terms; legislation should be construed to avoid absurdity and to promote purpose.

Court hierarchy: High Court, Federal Court and State Supreme Courts, District/County Courts, Local/Magistrates Courts; appeals follow statutory pathways.

Actus reus requires a voluntary physical element; omissions attract liability only where a duty to act is imposed by statute, contract, relationship, assumption of care or creation of danger.

Mens rea standards in order of severity: intention, knowledge, recklessness, negligence; He Kaw Teh principles presume mens rea unless statute clearly excludes it.

Murder requires an act or omission causing death with intent to kill, intent to cause grievous bodily harm, or reckless indifference to life; voluntary manslaughter mitigates via provocation or substantial impairment.

Temporal coincidence rule: the mens rea must exist at the time of the act causing the prohibited consequence (Thabo Meli exception applies to a continuing series of acts).

Strict and absolute liability offences dispense with mens rea; the defence of honest and reasonable mistake of fact is available for strict but not absolute liability.

Self-defence requires a reasonable belief in the need to defend and a proportionate response; excessive force in the home context is assessed under statutory modifications in most jurisdictions.

Police may arrest without warrant where a person is committing or has committed an offence; a search incidental to lawful arrest is limited to the person and immediate surroundings for safety and evidence.

The prosecution bears the legal burden of proving every element beyond reasonable doubt; the accused bears an evidential burden for defences such as provocation, duress and necessity.

Negligence elements: duty of care, breach (reasonable person standard, calculus of risk in s 5B Civil Liability Acts), causation (necessary condition plus scope of liability) and damage that is not too remote.

Duty of care is established by salient features (foreseeability, proximity, policy) rather than a single test; pure economic loss requires known reliance or assumption of responsibility.

Professional standard of care is that of the ordinary skilled member of the profession (Bolam/Bolitho); a doctor's duty to warn of material risks is governed by the Civil Liability Act provisions.

Defences to negligence: contributory negligence (apportioned damages), voluntary assumption of risk (obvious risk, no duty to warn under CLA), and illegality.

Trespass to land requires unauthorised entry; trespass to person includes battery (direct contact), assault (apprehension of imminent contact) and false imprisonment (total deprivation of liberty).

Private nuisance protects use and enjoyment of land; remedies include damages and injunction; the tort is not available for mere personal discomfort unless substantial and unreasonable.

Defamation elements: a defamatory imputation published to a third party identifying the plaintiff; defences include truth, contextual truth, honest opinion, qualified privilege and triviality.

Vicarious liability requires an employment relationship (or akin relationship) and a tort committed in the course of employment; independent contractors generally do not create vicarious liability.

Formation requires offer, acceptance, consideration and intention to create legal relations; acceptance must be communicated and mirror the offer (postal acceptance rule applies to letters).

Consideration must be bargained for and sufficient but need not be adequate; past consideration is not good consideration; part payment of a debt is not consideration (Foakes v Beer).

Certainty and completeness: vague or illusory promises may be unenforceable, though courts sever or give a reasonable meaning where possible.

Terms are classified as conditions, warranties and intermediate terms; breach of a condition permits termination plus damages, breach of a warranty permits damages only.

Parol evidence rule limits extrinsic evidence to contradict a written contract, but exceptions permit evidence of implied terms, collateral contracts and rectification.

Estoppel (Waltons Stores) requires a clear assumption, induced reliance, detriment and unconscionability; it may create rights where consideration is absent.

Vitiating factors: misrepresentation, duress, undue influence, unconscionable conduct and mistake; remedies include rescission (restitutio in integrum) and damages.

Frustration discharges a contract where an unforeseen event makes performance impossible or radically different; the statutory scheme apportions losses on frustration.

Torrens system: registration confers indefeasible title subject to exceptions including fraud, prior registered interests, easements and statutory overriding interests.

Old system title requires a chain of title; a bona fide purchaser for value without notice takes free of prior equitable interests.

Co-ownership: joint tenants have the right of survivorship and unity of title, time, interest and possession; tenants in common hold distinct undivided shares.

Leases require exclusive possession, certainty of term and rent (unless dispensed with); a licence confers personal permission only and creates no proprietary interest.

Easements require dominant and servient tenements, a benefit to the dominant land, and cannot be exclusive or vague; prescriptive easements require long user.

Covenants: the burden of a restrictive covenant may run with freehold land at law under Tulk v Moxhay principles; the burden of positive covenants generally does not run.

Mortgages: a registered mortgagee may exercise power of sale after default and notice; the mortgagee must act in good faith and take reasonable care to obtain market value.

Native title (Mabo, Native Title Act 1993) survives where not extinguished by an inconsistent grant; extinguishment requires clear and plain intention.

Maxims include: he who seeks equity must do equity; he who comes to equity must come with clean hands; equity looks to intent rather than form; delay defeats equity.

Fiduciary duties comprise no conflict of interest, no profit from position and no unauthorised benefit; remedies include account of profits, constructive trust and rescission.

A constructive trust arises by operation of law where unconscionability or breach of fiduciary duty requires it (e.g. Barnes v Addy first and second limbs).

Tracing in equity follows property into its proceeds and into mixed funds; the lowest intermediate balance rule applies to bank accounts.

Specific performance is available where damages are inadequate and the contract is certain, the plaintiff ready and willing, and no discretionary bar applies.

Injunctions: prohibitory, mandatory and quia timet; interlocutory injunctions require a serious question to be tried and the balance of convenience (Beecham).

Resulting trusts arise from contributions to purchase price or failure of an express trust; a presumption of advancement may rebut the presumption of resulting trust.

Doctrine of part performance requires acts unequivocally referable to the contract and acts by the party seeking relief.

Judicial review requires a decision by an officer of the Commonwealth or State under an enactment, and a person with standing (special interest beyond the general public).

Jurisdictional error is reviewable; non-jurisdictional error of law on the face of the record may be reviewable under the ADJR Act and State equivalents.

Grounds of review: procedural fairness, relevant/irrelevant considerations, improper purpose, bad faith, inflexible policy, unreasonableness, no evidence and error of law.

Procedural fairness requires a hearing rule (notice, opportunity to respond) and a bias rule (actual or apprehended bias under the double might test).

The ADJR Act provides statutory review of decisions; the Constitution s 75(v) and s 39B Judiciary Act preserve entrenched judicial review for Commonwealth officers.

Ombudsman, FOI, merits review tribunals (AAT, NCAT) and the Administrative Review Council provide non-judicial accountability mechanisms.

Delegated legislation is invalid if beyond the regulation-making power, uncertain, or inconsistent with the enabling Act; disallowance procedures apply in Parliament.

Privative clauses are construed strictly and cannot exclude jurisdiction for jurisdictional error (Plaintiff S157/2002).

The Commonwealth Constitution is contained in s 9 of the Commonwealth of Australia Constitution Act 1900 (Imp); it establishes a federal system with enumerated Commonwealth powers.

Section 51 heads of power are interpreted broadly (Engineers' case); incidental powers under s 51(xxxix) support legislation on matters incidental to enumerated powers.

Section 92 guarantees freedom of interstate trade, commerce and intercourse among the States; s 117 prohibits discrimination based on state residence.

Section 109 provides that a State law is invalid to the extent of inconsistency with a Commonwealth law; tests include direct inconsistency and covering the field.

The separation of judicial power precludes courts exercising non-judicial functions and prevents Parliament conferring judicial power on non-courts (Boilermakers).

Implied freedom of political communication (Lange) limits laws burdening communication on political matters; the test is structured proportionality.

Section 51(xxxi) requires just terms for acquisition of property by the Commonwealth; State acquisitions are governed by State constitutional provisions.

State constitutions are amendable by State Parliaments subject to manner and form provisions (s 6 Australia Acts); the Australia Acts also limit State extraterritoriality.

A court's jurisdiction may be territorial, subject-matter based, or based on the parties; service outside the jurisdiction requires leave or a statutory gateway.

A statement of claim must disclose a reasonable cause of action and plead material facts, not evidence; a defence must respond to each allegation and plead affirmatively.

Summary judgment or strike-out is available where the claim is frivolous, vexatious or an abuse of process, or discloses no reasonable cause of action.

Discovery and interrogatories are limited to documents relevant to issues in dispute; privilege (legal professional privilege, without prejudice) protects certain communications.

Case management powers include directions, timetabling, costs orders, and dismissal for want of prosecution; the overriding purpose is just, quick and cheap resolution.

Settlement: Calderbank offers and offers of compromise under the rules attract costs consequences where the offer is not beaten at judgment.

Costs follow the event; the court may depart for misconduct, offers, or public interest; security for costs may be ordered against impecunious plaintiffs.

Appeals require leave where the amount is below the statutory threshold; the appellate court generally corrects error, not rehear the case de novo.

Relevance is the threshold test; evidence must be relevant to a fact in issue, and the court may exclude relevant evidence under the unfair prejudice discretion.

Hearsay is an out-of-court assertion used to prove the truth of its contents; exceptions include admissions, business records, dying declarations and res gestae.

Opinion evidence is inadmissible unless the witness is an expert with specialised knowledge based on training, study or experience (s 79 uniform Evidence Acts).

Tendency and coincidence evidence require significant probative value and are excluded where unfair prejudice outweighs it; the tests differ between civil and criminal proceedings.

The credibility rule excludes evidence solely going to credibility; exceptions apply for prior consistent or inconsistent statements and expert evidence on credibility.

Privilege: legal professional privilege, client legal privilege, public interest immunity, and the privilege against self-incrimination; s 128 certificates apply in court.

Burden and standard of proof: the prosecution must prove guilt beyond reasonable doubt; the accused bears the evidential burden for defences and the legal burden for insanity.

The rule in Browne v Dunn requires a party to put its case to opposing witnesses; failure may entitle the witness to be recalled or attract adverse comment.

Solicitors owe duties to the court, to clients, to third parties and to the administration of justice; the duty to the court prevails over the duty to the client.

Confidentiality protects all client information; legal professional privilege protects confidential communications for legal advice or litigation; both survive the retainer.

A conflict of interest arises where the solicitor's interest or another client's interest conflicts with the client's; informed consent may permit a conflict but not a conflict of duty and duty in litigation.

A solicitor must not mislead the court, must disclose adverse authorities, and must correct any inadvertent misleading statement.

Trust account rules: client money must be held in a trust account, reconciled monthly, audited annually, and not mixed with office money.

Costs disclosure must be made before or at the time of engagement; costs agreements may be conditional but not excessive; billing must be clear and itemised.

Advertising and touting are regulated; solicitors must not engage in conduct that is likely to diminish public confidence in the profession.

Continuing professional development, practising certificates, and mandatory disclosure of disciplinary matters are required for practice.

A company is a separate legal entity (Salomon v Salomon) with perpetual succession, capacity to sue and be sued, and limited liability for members.

Directors' duties: care and diligence, good faith, proper purpose, no improper use of position or information, and avoidance of conflicts of interest (ss 180-183 Corporations Act).

Business judgment rule (s 180(2)) protects directors who act in good faith, on an informed basis, without material personal interest and rationally believing the judgment is in the best interests of the company.

Insolvent trading (s 588G) imposes liability on directors where the company incurs a debt while insolvent and there are reasonable grounds for suspecting insolvency.

Shareholder remedies include the statutory derivative action (Part 2F.1A), oppression (s 232), and winding up on just and equitable grounds (s 461).

Corporations can raise capital through shares and debentures; disclosure documents (prospectus) are required unless an exemption applies.

Takeovers are regulated by the Corporations Act and the Takeovers Panel; the Eggleston principles require equal opportunity and an efficient market.

Directors may be disqualified by ASIC or the court; phoenix activity is targeted by asset-stripping and director penalty provisions.

Primary sources: legislation, delegated legislation and case law; secondary sources: textbooks, journal articles, dictionaries and encyclopaedias.

Case citation format: party names (year) volume reporter starting page (court); authorised reports (CLR, FCR, NSWLR) are preferred over unauthorised reports.

Statutory interpretation begins with the text, read in context and purpose (Acts Interpretation Act); extrinsic materials may be considered under s 15AB.

The doctrine of precedent: ratio decidendi binds lower courts in the same hierarchy; obiter dicta is persuasive; High Court decisions bind all Australian courts.

The IRAC method structures legal writing: Issue, Rule, Application, Conclusion; case notes should identify material facts, issue, holding and reasoning.

Legal research databases include AustLII, LexisNexis, Westlaw and Jade; citators (CaseBase, KeyCite) verify the subsequent history of authorities.

Plain English drafting favours short sentences, active voice and defined terms; legislation should be construed to avoid absurdity and to promote purpose.

Court hierarchy: High Court, Federal Court and State Supreme Courts, District/County Courts, Local/Magistrates Courts; appeals follow statutory pathways.

Actus reus requires a voluntary physical element; omissions attract liability only where a duty to act is imposed by statute, contract, relationship, assumption of care or creation of danger.

Mens rea standards in order of severity: intention, knowledge, recklessness, negligence; He Kaw Teh principles presume mens rea unless statute clearly excludes it.

Murder requires an act or omission causing death with intent to kill, intent to cause grievous bodily harm, or reckless indifference to life; voluntary manslaughter mitigates via provocation or substantial impairment.

Temporal coincidence rule: the mens rea must exist at the time of the act causing the prohibited consequence (Thabo Meli exception applies to a continuing series of acts).

Strict and absolute liability offences dispense with mens rea; the defence of honest and reasonable mistake of fact is available for strict but not absolute liability.

Self-defence requires a reasonable belief in the need to defend and a proportionate response; excessive force in the home context is assessed under statutory modifications in most jurisdictions.

Police may arrest without warrant where a person is committing or has committed an offence; a search incidental to lawful arrest is limited to the person and immediate surroundings for safety and evidence.

The prosecution bears the legal burden of proving every element beyond reasonable doubt; the accused bears an evidential burden for defences such as provocation, duress and necessity.

Negligence elements: duty of care, breach (reasonable person standard, calculus of risk in s 5B Civil Liability Acts), causation (necessary condition plus scope of liability) and damage that is not too remote.

Duty of care is established by salient features (foreseeability, proximity, policy) rather than a single test; pure economic loss requires known reliance or assumption of responsibility.

Professional standard of care is that of the ordinary skilled member of the profession (Bolam/Bolitho); a doctor's duty to warn of material risks is governed by the Civil Liability Act provisions.

Defences to negligence: contributory negligence (apportioned damages), voluntary assumption of risk (obvious risk, no duty to warn under CLA), and illegality.

Trespass to land requires unauthorised entry; trespass to person includes battery (direct contact), assault (apprehension of imminent contact) and false imprisonment (total deprivation of liberty).

Private nuisance protects use and enjoyment of land; remedies include damages and injunction; the tort is not available for mere personal discomfort unless substantial and unreasonable.

Defamation elements: a defamatory imputation published to a third party identifying the plaintiff; defences include truth, contextual truth, honest opinion, qualified privilege and triviality.

Vicarious liability requires an employment relationship (or akin relationship) and a tort committed in the course of employment; independent contractors generally do not create vicarious liability.

Formation requires offer, acceptance, consideration and intention to create legal relations; acceptance must be communicated and mirror the offer (postal acceptance rule applies to letters).

Consideration must be bargained for and sufficient but need not be adequate; past consideration is not good consideration; part payment of a debt is not consideration (Foakes v Beer).

Certainty and completeness: vague or illusory promises may be unenforceable, though courts sever or give a reasonable meaning where possible.

Terms are classified as conditions, warranties and intermediate terms; breach of a condition permits termination plus damages, breach of a warranty permits damages only.

Parol evidence rule limits extrinsic evidence to contradict a written contract, but exceptions permit evidence of implied terms, collateral contracts and rectification.

Estoppel (Waltons Stores) requires a clear assumption, induced reliance, detriment and unconscionability; it may create rights where consideration is absent.

Vitiating factors: misrepresentation, duress, undue influence, unconscionable conduct and mistake; remedies include rescission (restitutio in integrum) and damages.

Frustration discharges a contract where an unforeseen event makes performance impossible or radically different; the statutory scheme apportions losses on frustration.

Torrens system: registration confers indefeasible title subject to exceptions including fraud, prior registered interests, easements and statutory overriding interests.

Old system title requires a chain of title; a bona fide purchaser for value without notice takes free of prior equitable interests.

Co-ownership: joint tenants have the right of survivorship and unity of title, time, interest and possession; tenants in common hold distinct undivided shares.

Leases require exclusive possession, certainty of term and rent (unless dispensed with); a licence confers personal permission only and creates no proprietary interest.

Easements require dominant and servient tenements, a benefit to the dominant land, and cannot be exclusive or vague; prescriptive easements require long user.

Covenants: the burden of a restrictive covenant may run with freehold land at law under Tulk v Moxhay principles; the burden of positive covenants generally does not run.

Mortgages: a registered mortgagee may exercise power of sale after default and notice; the mortgagee must act in good faith and take reasonable care to obtain market value.

Native title (Mabo, Native Title Act 1993) survives where not extinguished by an inconsistent grant; extinguishment requires clear and plain intention.

Maxims include: he who seeks equity must do equity; he who comes to equity must come with clean hands; equity looks to intent rather than form; delay defeats equity.

Fiduciary duties comprise no conflict of interest, no profit from position and no unauthorised benefit; remedies include account of profits, constructive trust and rescission.

A constructive trust arises by operation of law where unconscionability or breach of fiduciary duty requires it (e.g. Barnes v Addy first and second limbs).

Tracing in equity follows property into its proceeds and into mixed funds; the lowest intermediate balance rule applies to bank accounts.

Specific performance is available where damages are inadequate and the contract is certain, the plaintiff ready and willing, and no discretionary bar applies.

Injunctions: prohibitory, mandatory and quia timet; interlocutory injunctions require a serious question to be tried and the balance of convenience (Beecham).

Resulting trusts arise from contributions to purchase price or failure of an express trust; a presumption of advancement may rebut the presumption of resulting trust.

Doctrine of part performance requires acts unequivocally referable to the contract and acts by the party seeking relief.

Judicial review requires a decision by an officer of the Commonwealth or State under an enactment, and a person with standing (special interest beyond the general public).

Jurisdictional error is reviewable; non-jurisdictional error of law on the face of the record may be reviewable under the ADJR Act and State equivalents.

Grounds of review: procedural fairness, relevant/irrelevant considerations, improper purpose, bad faith, inflexible policy, unreasonableness, no evidence and error of law.

Procedural fairness requires a hearing rule (notice, opportunity to respond) and a bias rule (actual or apprehended bias under the double might test).

The ADJR Act provides statutory review of decisions; the Constitution s 75(v) and s 39B Judiciary Act preserve entrenched judicial review for Commonwealth officers.

Ombudsman, FOI, merits review tribunals (AAT, NCAT) and the Administrative Review Council provide non-judicial accountability mechanisms.

Delegated legislation is invalid if beyond the regulation-making power, uncertain, or inconsistent with the enabling Act; disallowance procedures apply in Parliament.

Privative clauses are construed strictly and cannot exclude jurisdiction for jurisdictional error (Plaintiff S157/2002).

The Commonwealth Constitution is contained in s 9 of the Commonwealth of Australia Constitution Act 1900 (Imp); it establishes a federal system with enumerated Commonwealth powers.

Section 51 heads of power are interpreted broadly (Engineers' case); incidental powers under s 51(xxxix) support legislation on matters incidental to enumerated powers.

Section 92 guarantees freedom of interstate trade, commerce and intercourse among the States; s 117 prohibits discrimination based on state residence.

Section 109 provides that a State law is invalid to the extent of inconsistency with a Commonwealth law; tests include direct inconsistency and covering the field.

The separation of judicial power precludes courts exercising non-judicial functions and prevents Parliament conferring judicial power on non-courts (Boilermakers).

Implied freedom of political communication (Lange) limits laws burdening communication on political matters; the test is structured proportionality.

Section 51(xxxi) requires just terms for acquisition of property by the Commonwealth; State acquisitions are governed by State constitutional provisions.

State constitutions are amendable by State Parliaments subject to manner and form provisions (s 6 Australia Acts); the Australia Acts also limit State extraterritoriality.

A court's jurisdiction may be territorial, subject-matter based, or based on the parties; service outside the jurisdiction requires leave or a statutory gateway.

A statement of claim must disclose a reasonable cause of action and plead material facts, not evidence; a defence must respond to each allegation and plead affirmatively.

Summary judgment or strike-out is available where the claim is frivolous, vexatious or an abuse of process, or discloses no reasonable cause of action.

Discovery and interrogatories are limited to documents relevant to issues in dispute; privilege (legal professional privilege, without prejudice) protects certain communications.

Case management powers include directions, timetabling, costs orders, and dismissal for want of prosecution; the overriding purpose is just, quick and cheap resolution.

Settlement: Calderbank offers and offers of compromise under the rules attract costs consequences where the offer is not beaten at judgment.

Costs follow the event; the court may depart for misconduct, offers, or public interest; security for costs may be ordered against impecunious plaintiffs.

Appeals require leave where the amount is below the statutory threshold; the appellate court generally corrects error, not rehear the case de novo.

Relevance is the threshold test; evidence must be relevant to a fact in issue, and the court may exclude relevant evidence under the unfair prejudice discretion.

Hearsay is an out-of-court assertion used to prove the truth of its contents; exceptions include admissions, business records, dying declarations and res gestae.

Opinion evidence is inadmissible unless the witness is an expert with specialised knowledge based on training, study or experience (s 79 uniform Evidence Acts).

Tendency and coincidence evidence require significant probative value and are excluded where unfair prejudice outweighs it; the tests differ between civil and criminal proceedings.

The credibility rule excludes evidence solely going to credibility; exceptions apply for prior consistent or inconsistent statements and expert evidence on credibility.

Privilege: legal professional privilege, client legal privilege, public interest immunity, and the privilege against self-incrimination; s 128 certificates apply in court.

Burden and standard of proof: the prosecution must prove guilt beyond reasonable doubt; the accused bears the evidential burden for defences and the legal burden for insanity.

The rule in Browne v Dunn requires a party to put its case to opposing witnesses; failure may entitle the witness to be recalled or attract adverse comment.

Solicitors owe duties to the court, to clients, to third parties and to the administration of justice; the duty to the court prevails over the duty to the client.

Confidentiality protects all client information; legal professional privilege protects confidential communications for legal advice or litigation; both survive the retainer.

A conflict of interest arises where the solicitor's interest or another client's interest conflicts with the client's; informed consent may permit a conflict but not a conflict of duty and duty in litigation.

A solicitor must not mislead the court, must disclose adverse authorities, and must correct any inadvertent misleading statement.

Trust account rules: client money must be held in a trust account, reconciled monthly, audited annually, and not mixed with office money.

Costs disclosure must be made before or at the time of engagement; costs agreements may be conditional but not excessive; billing must be clear and itemised.

Advertising and touting are regulated; solicitors must not engage in conduct that is likely to diminish public confidence in the profession.

Continuing professional development, practising certificates, and mandatory disclosure of disciplinary matters are required for practice.

A company is a separate legal entity (Salomon v Salomon) with perpetual succession, capacity to sue and be sued, and limited liability for members.

Directors' duties: care and diligence, good faith, proper purpose, no improper use of position or information, and avoidance of conflicts of interest (ss 180-183 Corporations Act).

Business judgment rule (s 180(2)) protects directors who act in good faith, on an informed basis, without material personal interest and rationally believing the judgment is in the best interests of the company.

Insolvent trading (s 588G) imposes liability on directors where the company incurs a debt while insolvent and there are reasonable grounds for suspecting insolvency.

Shareholder remedies include the statutory derivative action (Part 2F.1A), oppression (s 232), and winding up on just and equitable grounds (s 461).

Corporations can raise capital through shares and debentures; disclosure documents (prospectus) are required unless an exemption applies.

Takeovers are regulated by the Corporations Act and the Takeovers Panel; the Eggleston principles require equal opportunity and an efficient market.

Directors may be disqualified by ASIC or the court; phoenix activity is targeted by asset-stripping and director penalty provisions.

Primary sources: legislation, delegated legislation and case law; secondary sources: textbooks, journal articles, dictionaries and encyclopaedias.

Case citation format: party names (year) volume reporter starting page (court); authorised reports (CLR, FCR, NSWLR) are preferred over unauthorised reports.

Statutory interpretation begins with the text, read in context and purpose (Acts Interpretation Act); extrinsic materials may be considered under s 15AB.

The doctrine of precedent: ratio decidendi binds lower courts in the same hierarchy; obiter dicta is persuasive; High Court decisions bind all Australian courts.

The IRAC method structures legal writing: Issue, Rule, Application, Conclusion; case notes should identify material facts, issue, holding and reasoning.

Legal research databases include AustLII, LexisNexis, Westlaw and Jade; citators (CaseBase, KeyCite) verify the subsequent history of authorities.

Plain English drafting favours short sentences, active voice and defined terms; legislation should be construed to avoid absurdity and to promote purpose.

Court hierarchy: High Court, Federal Court and State Supreme Courts, District/County Courts, Local/Magistrates Courts; appeals follow statutory pathways.

Actus reus requires a voluntary physical element; omissions attract liability only where a duty to act is imposed by statute, contract, relationship, assumption of care or creation of danger.

Mens rea standards in order of severity: intention, knowledge, recklessness, negligence; He Kaw Teh principles presume mens rea unless statute clearly excludes it.

Murder requires an act or omission causing death with intent to kill, intent to cause grievous bodily harm, or reckless indifference to life; voluntary manslaughter mitigates via provocation or substantial impairment.

Temporal coincidence rule: the mens rea must exist at the time of the act causing the prohibited consequence (Thabo Meli exception applies to a continuing series of acts).

Strict and absolute liability offences dispense with mens rea; the defence of honest and reasonable mistake of fact is available for strict but not absolute liability.

Self-defence requires a reasonable belief in the need to defend and a proportionate response; excessive force in the home context is assessed under statutory modifications in most jurisdictions.

Police may arrest without warrant where a person is committing or has committed an offence; a search incidental to lawful arrest is limited to the person and immediate surroundings for safety and evidence.

The prosecution bears the legal burden of proving every element beyond reasonable doubt; the accused bears an evidential burden for defences such as provocation, duress and necessity.

Negligence elements: duty of care, breach (reasonable person standard, calculus of risk in s 5B Civil Liability Acts), causation (necessary condition plus scope of liability) and damage that is not too remote.

Duty of care is established by salient features (foreseeability, proximity, policy) rather than a single test; pure economic loss requires known reliance or assumption of responsibility.

Professional standard of care is that of the ordinary skilled member of the profession (Bolam/Bolitho); a doctor's duty to warn of material risks is governed by the Civil Liability Act provisions.

Defences to negligence: contributory negligence (apportioned damages), voluntary assumption of risk (obvious risk, no duty to warn under CLA), and illegality.

Trespass to land requires unauthorised entry; trespass to person includes battery (direct contact), assault (apprehension of imminent contact) and false imprisonment (total deprivation of liberty).

Private nuisance protects use and enjoyment of land; remedies include damages and injunction; the tort is not available for mere personal discomfort unless substantial and unreasonable.

Defamation elements: a defamatory imputation published to a third party identifying the plaintiff; defences include truth, contextual truth, honest opinion, qualified privilege and triviality.

Vicarious liability requires an employment relationship (or akin relationship) and a tort committed in the course of employment; independent contractors generally do not create vicarious liability.

Formation requires offer, acceptance, consideration and intention to create legal relations; acceptance must be communicated and mirror the offer (postal acceptance rule applies to letters).

Consideration must be bargained for and sufficient but need not be adequate; past consideration is not good consideration; part payment of a debt is not consideration (Foakes v Beer).

Certainty and completeness: vague or illusory promises may be unenforceable, though courts sever or give a reasonable meaning where possible.

Terms are classified as conditions, warranties and intermediate terms; breach of a condition permits termination plus damages, breach of a warranty permits damages only.

Parol evidence rule limits extrinsic evidence to contradict a written contract, but exceptions permit evidence of implied terms, collateral contracts and rectification.

Estoppel (Waltons Stores) requires a clear assumption, induced reliance, detriment and unconscionability; it may create rights where consideration is absent.

Vitiating factors: misrepresentation, duress, undue influence, unconscionable conduct and mistake; remedies include rescission (restitutio in integrum) and damages.

Frustration discharges a contract where an unforeseen event makes performance impossible or radically different; the statutory scheme apportions losses on frustration.

Torrens system: registration confers indefeasible title subject to exceptions including fraud, prior registered interests, easements and statutory overriding interests.

Old system title requires a chain of title; a bona fide purchaser for value without notice takes free of prior equitable interests.

Co-ownership: joint tenants have the right of survivorship and unity of title, time, interest and possession; tenants in common hold distinct undivided shares.

Leases require exclusive possession, certainty of term and rent (unless dispensed with); a licence confers personal permission only and creates no proprietary interest.

Easements require dominant and servient tenements, a benefit to the dominant land, and cannot be exclusive or vague; prescriptive easements require long user.

Covenants: the burden of a restrictive covenant may run with freehold land at law under Tulk v Moxhay principles; the burden of positive covenants generally does not run.

Mortgages: a registered mortgagee may exercise power of sale after default and notice; the mortgagee must act in good faith and take reasonable care to obtain market value.

Native title (Mabo, Native Title Act 1993) survives where not extinguished by an inconsistent grant; extinguishment requires clear and plain intention.

Maxims include: he who seeks equity must do equity; he who comes to equity must come with clean hands; equity looks to intent rather than form; delay defeats equity.

Fiduciary duties comprise no conflict of interest, no profit from position and no unauthorised benefit; remedies include account of profits, constructive trust and rescission.

A constructive trust arises by operation of law where unconscionability or breach of fiduciary duty requires it (e.g. Barnes v Addy first and second limbs).

Tracing in equity follows property into its proceeds and into mixed funds; the lowest intermediate balance rule applies to bank accounts.

Specific performance is available where damages are inadequate and the contract is certain, the plaintiff ready and willing, and no discretionary bar applies.

Injunctions: prohibitory, mandatory and quia timet; interlocutory injunctions require a serious question to be tried and the balance of convenience (Beecham).

Resulting trusts arise from contributions to purchase price or failure of an express trust; a presumption of advancement may rebut the presumption of resulting trust.

Doctrine of part performance requires acts unequivocally referable to the contract and acts by the party seeking relief.

Judicial review requires a decision by an officer of the Commonwealth or State under an enactment, and a person with standing (special interest beyond the general public).

Jurisdictional error is reviewable; non-jurisdictional error of law on the face of the record may be reviewable under the ADJR Act and State equivalents.

Grounds of review: procedural fairness, relevant/irrelevant considerations, improper purpose, bad faith, inflexible policy, unreasonableness, no evidence and error of law.

Procedural fairness requires a hearing rule (notice, opportunity to respond) and a bias rule (actual or apprehended bias under the double might test).

The ADJR Act provides statutory review of decisions; the Constitution s 75(v) and s 39B Judiciary Act preserve entrenched judicial review for Commonwealth officers.

Ombudsman, FOI, merits review tribunals (AAT, NCAT) and the Administrative Review Council provide non-judicial accountability mechanisms.

Delegated legislation is invalid if beyond the regulation-making power, uncertain, or inconsistent with the enabling Act; disallowance procedures apply in Parliament.

Privative clauses are construed strictly and cannot exclude jurisdiction for jurisdictional error (Plaintiff S157/2002).

The Commonwealth Constitution is contained in s 9 of the Commonwealth of Australia Constitution Act 1900 (Imp); it establishes a federal system with enumerated Commonwealth powers.

Section 51 heads of power are interpreted broadly (Engineers' case); incidental powers under s 51(xxxix) support legislation on matters incidental to enumerated powers.

Section 92 guarantees freedom of interstate trade, commerce and intercourse among the States; s 117 prohibits discrimination based on state residence.

Section 109 provides that a State law is invalid to the extent of inconsistency with a Commonwealth law; tests include direct inconsistency and covering the field.

The separation of judicial power precludes courts exercising non-judicial functions and prevents Parliament conferring judicial power on non-courts (Boilermakers).

Implied freedom of political communication (Lange) limits laws burdening communication on political matters; the test is structured proportionality.

Section 51(xxxi) requires just terms for acquisition of property by the Commonwealth; State acquisitions are governed by State constitutional provisions.

State constitutions are amendable by State Parliaments subject to manner and form provisions (s 6 Australia Acts); the Australia Acts also limit State extraterritoriality.

A court's jurisdiction may be territorial, subject-matter based, or based on the parties; service outside the jurisdiction requires leave or a statutory gateway.

A statement of claim must disclose a reasonable cause of action and plead material facts, not evidence; a defence must respond to each allegation and plead affirmatively.

Summary judgment or strike-out is available where the claim is frivolous, vexatious or an abuse of process, or discloses no reasonable cause of action.

Discovery and interrogatories are limited to documents relevant to issues in dispute; privilege (legal professional privilege, without prejudice) protects certain communications.

Case management powers include directions, timetabling, costs orders, and dismissal for want of prosecution; the overriding purpose is just, quick and cheap resolution.

Settlement: Calderbank offers and offers of compromise under the rules attract costs consequences where the offer is not beaten at judgment.

Costs follow the event; the court may depart for misconduct, offers, or public interest; security for costs may be ordered against impecunious plaintiffs.

Appeals require leave where the amount is below the statutory threshold; the appellate court generally corrects error, not rehear the case de novo.

Relevance is the threshold test; evidence must be relevant to a fact in issue, and the court may exclude relevant evidence under the unfair prejudice discretion.

Hearsay is an out-of-court assertion used to prove the truth of its contents; exceptions include admissions, business records, dying declarations and res gestae.

Opinion evidence is inadmissible unless the witness is an expert with specialised knowledge based on training, study or experience (s 79 uniform Evidence Acts).

Tendency and coincidence evidence require significant probative value and are excluded where unfair prejudice outweighs it; the tests differ between civil and criminal proceedings.

The credibility rule excludes evidence solely going to credibility; exceptions apply for prior consistent or inconsistent statements and expert evidence on credibility.

Privilege: legal professional privilege, client legal privilege, public interest immunity, and the privilege against self-incrimination; s 128 certificates apply in court.

Burden and standard of proof: the prosecution must prove guilt beyond reasonable doubt; the accused bears the evidential burden for defences and the legal burden for insanity.

The rule in Browne v Dunn requires a party to put its case to opposing witnesses; failure may entitle the witness to be recalled or attract adverse comment.

Solicitors owe duties to the court, to clients, to third parties and to the administration of justice; the duty to the court prevails over the duty to the client.

Confidentiality protects all client information; legal professional privilege protects confidential communications for legal advice or litigation; both survive the retainer.

A conflict of interest arises where the solicitor's interest or another client's interest conflicts with the client's; informed consent may permit a conflict but not a conflict of duty and duty in litigation.

A solicitor must not mislead the court, must disclose adverse authorities, and must correct any inadvertent misleading statement.

Trust account rules: client money must be held in a trust account, reconciled monthly, audited annually, and not mixed with office money.

Costs disclosure must be made before or at the time of engagement; costs agreements may be conditional but not excessive; billing must be clear and itemised.

Advertising and touting are regulated; solicitors must not engage in conduct that is likely to diminish public confidence in the profession.

Continuing professional development, practising certificates, and mandatory disclosure of disciplinary matters are required for practice.

A company is a separate legal entity (Salomon v Salomon) with perpetual succession, capacity to sue and be sued, and limited liability for members.

Directors' duties: care and diligence, good faith, proper purpose, no improper use of position or information, and avoidance of conflicts of interest (ss 180-183 Corporations Act).

Business judgment rule (s 180(2)) protects directors who act in good faith, on an informed basis, without material personal interest and rationally believing the judgment is in the best interests of the company.

Insolvent trading (s 588G) imposes liability on directors where the company incurs a debt while insolvent and there are reasonable grounds for suspecting insolvency.

Shareholder remedies include the statutory derivative action (Part 2F.1A), oppression (s 232), and winding up on just and equitable grounds (s 461).

Corporations can raise capital through shares and debentures; disclosure documents (prospectus) are required unless an exemption applies.

Takeovers are regulated by the Corporations Act and the Takeovers Panel; the Eggleston principles require equal opportunity and an efficient market.

Directors may be disqualified by ASIC or the court; phoenix activity is targeted by asset-stripping and director penalty provisions.

Primary sources: legislation, delegated legislation and case law; secondary sources: textbooks, journal articles, dictionaries and encyclopaedias.

Case citation format: party names (year) volume reporter starting page (court); authorised reports (CLR, FCR, NSWLR) are preferred over unauthorised reports.

Statutory interpretation begins with the text, read in context and purpose (Acts Interpretation Act); extrinsic materials may be considered under s 15AB.

The doctrine of precedent: ratio decidendi binds lower courts in the same hierarchy; obiter dicta is persuasive; High Court decisions bind all Australian courts.

The IRAC method structures legal writing: Issue, Rule, Application, Conclusion; case notes should identify material facts, issue, holding and reasoning.

Legal research databases include AustLII, LexisNexis, Westlaw and Jade; citators (CaseBase, KeyCite) verify the subsequent history of authorities.

Plain English drafting favours short sentences, active voice and defined terms; legislation should be construed to avoid absurdity and to promote purpose.

Court hierarchy: High Court, Federal Court and State Supreme Courts, District/County Courts, Local/Magistrates Courts; appeals follow statutory pathways.