OH Bar study materials
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OH Bar key terms

OH Bar · Get comfortable with the vocabulary.

Personal Jurisdiction

A court's power over a party, satisfied by domicile, presence, consent, or minimum contacts with the forum such that suit does not offend traditional notions of fair play and substantial justice.

Related: Long-Arm Statute, Minimum Contacts
Minimum Contacts

The purposeful availment of a forum's benefits by a defendant, creating a relationship with the state that makes jurisdiction foreseeable and reasonable rather than random, isolated, or fortuitous.

Related: Personal Jurisdiction, Long-Arm Statute
Long-Arm Statute

A state law authorizing courts to reach nonresident defendants who engage in specified acts, such as transacting business or committing a tort, within the state, subject to constitutional limits.

Related: Personal Jurisdiction, Minimum Contacts
Subject Matter Jurisdiction

A court's authority to hear a category of case, such as federal question or diversity jurisdiction in federal court; it cannot be waived and may be raised at any time.

Related: Diversity Jurisdiction, Supplemental Jurisdiction
Diversity Jurisdiction

Federal jurisdiction over civil actions between citizens of different states (or foreign nationals) where the amount in controversy exceeds $75,000, determined from the complaint's good-faith allegations.

Related: Subject Matter Jurisdiction, Supplemental Jurisdiction
Supplemental Jurisdiction

Federal power to hear additional claims sharing a common nucleus of operative fact with a claim that already invokes federal jurisdiction, subject to statutory limits in diversity cases.

Related: Subject Matter Jurisdiction, Diversity Jurisdiction
Erie Doctrine

The principle that federal courts sitting in diversity apply state substantive law but federal procedural rules, balancing uniformity and federalism under the Rules Enabling Act and the Constitution.

Related: Diversity Jurisdiction, Summary Judgment
Summary Judgment

Pretrial disposition where the movant shows no genuine dispute of material fact and entitlement to judgment as a matter of law, supported by evidence admissible at trial.

Related: Erie Doctrine, Burden of Proof
Claim Preclusion

The bar on relitigating a claim already decided by final judgment on the merits, requiring identity of parties or privies, the same claim, and a valid final decision.

Related: Issue Preclusion
Issue Preclusion

The bar on relitigating an issue actually litigated and necessarily decided in a prior case between the same or closely related parties, even where the second claim differs.

Related: Claim Preclusion
State Action Doctrine

The requirement that constitutional rights constrain government conduct, so private conduct is generally unregulated by the Constitution unless sufficiently entangled with or performing a public function for the state.

Related: Due Process, Equal Protection
Strict Scrutiny

The most demanding equal protection or due process test: the law must serve a compelling governmental interest and be narrowly tailored, used for suspect classifications and fundamental rights.

Related: Equal Protection, Intermediate Scrutiny
Intermediate Scrutiny

The mid-level test requiring an important governmental interest and a law substantially related to that interest, applied to sex-based classifications and certain other quasi-suspect categories.

Related: Strict Scrutiny, Equal Protection
Equal Protection

The guarantee that government may not deny any person the equal protection of the laws, chiefly forbidding invidious discrimination through classifications reviewed under tiered scrutiny.

Related: Strict Scrutiny, Intermediate Scrutiny
Due Process

The guarantee of fair procedure before deprivation of life, liberty, or property, and of substantive limits on arbitrary government action, under the Fifth and Fourteenth Amendments.

Related: State Action Doctrine, Void for Vagueness
Void for Vagueness

A due process defect in a law that fails to give a person of ordinary intelligence fair notice of prohibited conduct or invites arbitrary and discriminatory enforcement.

Related: Due Process, Overbreadth
Overbreadth

A First Amendment doctrine permitting facial invalidation of a law that sweeps in substantial amounts of protected speech, even as applied to the challenger's own conduct.

Related: Void for Vagueness, Prior Restraint
Prior Restraint

A licensing or injunction scheme that suppresses speech before publication; it bears a heavy presumption of unconstitutionality and requires narrow standards, prompt review, and procedural safeguards.

Related: Overbreadth
Offer

A manifestation of present contractual intent so definite that acceptance will close the deal, empowering the offeree to create a contract by acceptance.

Related: Acceptance, Consideration
Acceptance

A manifestation of assent to an offer's terms made in the manner invited, effective on dispatch under the mailbox rule unless the offer says otherwise.

Related: Offer, Mirror Image Rule
Mirror Image Rule

The common-law rule that an acceptance must match the offer exactly; a response adding or changing terms is a counteroffer, not an acceptance, absent UCC Article 2's different approach.

Related: Acceptance, UCC Article 2
Consideration

A bargained-for exchange of legal detriment or benefit that makes a promise enforceable, distinguishing contract from gift or gratuitous assurance.

Related: Offer, Promissory Estoppel
Promissory Estoppel

Enforcement of a promise lacking consideration where the promisor reasonably expected reliance, reliance occurred, and injustice can be avoided only by enforcement.

Related: Consideration, Detrimental Reliance
Detrimental Reliance

A change of position induced by another's promise or representation, which may make the promise binding or support estoppel even without a formal exchange.

Related: Promissory Estoppel, Consideration
UCC Article 2

The Uniform Commercial Code article governing sales of goods, relaxing common-law rules with open terms, firm offers by merchants, and the perfect-tender rule for acceptance.

Related: Mirror Image Rule, Acceptance
Mens Rea

The mental state element of a crime-such as purpose, knowledge, recklessness, or negligence-that must accompany the prohibited act for conviction.

Related: Actus Reus, Specific Intent
Actus Reus

The voluntary physical act or legally required omission constituting the conduct element of a crime, excluding mere thoughts or reflexive movements.

Related: Mens Rea
Specific Intent

A mental state requiring the defendant to intend a particular result or circumstance beyond the act itself, permitting defenses like voluntary intoxication and mistake of fact.

Related: Mens Rea, Miranda Warning
Miranda Warning

Custodial interrogation safeguards requiring police to advise suspects of the rights to silence and counsel before questioning, with waiver and invocation rules governing admissibility.

Related: Fourth Amendment Search, Exclusionary Rule
Fourth Amendment Search

Government intrusion into a reasonable expectation of privacy or onto constitutionally protected property, generally requiring a warrant supported by probable cause absent an exception.

Related: Exclusionary Rule, Miranda Warning
Exclusionary Rule

The remedy suppressing evidence obtained in violation of constitutional rights, subject to exceptions such as good faith, attenuation, inevitable discovery, and impeachment use.

Related: Fourth Amendment Search, Miranda Warning
Hearsay

An out-of-court statement offered to prove the truth of the matter asserted, generally inadmissible unless an exemption or exception applies.

Related: Present Sense Impression, Confrontation Clause
Present Sense Impression

A hearsay exception for a statement describing or explaining an event made while or immediately after the declarant perceived it, admissible regardless of declarant availability.

Related: Hearsay, Excited Utterance
Excited Utterance

A hearsay exception for a statement relating to a startling event made while the declarant was under the stress of excitement it caused, admissible regardless of availability.

Related: Hearsay, Present Sense Impression
Confrontation Clause

The Sixth Amendment right of a criminal defendant to confront adverse witnesses, barring testimonial hearsay from an unavailable declarant unless the defendant had a prior opportunity to cross-examine.

Related: Hearsay, Present Sense Impression
Burden of Proof

The obligation to persuade the factfinder (preponderance, clear and convincing, or beyond a reasonable doubt) and to produce evidence, allocated by substantive law and presumptions.

Related: Summary Judgment, Hearsay
Adverse Possession

Acquisition of title to another's land through actual, open, notorious, exclusive, continuous, and hostile possession for the statutory period, possibly with color of title extensions.

Related: Easement, Recording Statute
Easement

A nonpossessory right to use another's land for a limited purpose, created by grant, implication, necessity, or prescription, and subject to termination rules.

Related: Adverse Possession, Recording Statute
Recording Statute

A state law determining priority between competing interests in land based on recording, using race, notice, or race-notice approaches to protect subsequent purchasers.

Related: Easement, Adverse Possession
Duty of Care

The tort obligation to act as a reasonable person of ordinary prudence under the circumstances, breached by conduct falling below that standard and causing foreseeable harm.

Related: Negligence Per Se, Proximate Cause
Negligence Per Se

Where a statute sets a standard of conduct, its unexcused violation establishes breach when the plaintiff is within the class the statute protects and the harm is the type it prevents.

Related: Duty of Care, Proximate Cause
Proximate Cause

The requirement that the defendant's breach be the actual and legal cause of harm, limiting liability to foreseeable results rather than remote or extraordinary consequences.

Related: Duty of Care, Negligence Per Se
Fiduciary Duty

The obligation of loyalty and care owed by directors, officers, partners, and agents, requiring good faith, informed decisions, and no self-dealing absent fairness or approval.

Related: Piercing the Corporate Veil, Business Judgment Rule
Business Judgment Rule

A presumption that corporate directors acted on an informed basis, in good faith, and in the corporation's best interest, shielding decisions from liability unless rebutted.

Related: Fiduciary Duty, Piercing the Corporate Veil
Piercing the Corporate Veil

Disregarding limited liability to hold shareholders personally liable where the corporation is used as an alter ego, is undercapitalized, or perpetuates fraud or injustice.

Related: Fiduciary Duty, Business Judgment Rule
Specific Performance

An equitable remedy compelling performance of a contract where damages are inadequate, typically for unique goods or land, and only when the terms are definite and enforcement feasible.

Related: Injunction, Rescission
Injunction

A court order requiring a party to do or refrain from an act, granted under standards of irreparable harm, likelihood of success, balance of hardships, and public interest.

Related: Specific Performance, Rescission
Rescission

Cancellation of a contract restoring the parties to their pre-contract positions, available for fraud, mistake, duress, or material breach where restoration is possible.

Related: Specific Performance, Injunction
Multistate Performance Test

A ninety-minute skills examination presenting a file and library from which the candidate drafts a practical document, such as a memo or brief, applying supplied authorities.

Related: Multistate Bar Examination
Multistate Bar Examination

A multiple-choice test of general legal doctrines across seven subjects, scored on a scaled basis and combined with essay and performance components for bar admission.

Related: Multistate Performance Test
Ohio Board of Professional Conduct

The body that investigates and adjudicates attorney ethics complaints and recommends discipline to the Supreme Court of Ohio, guided by the Ohio Rules of Professional Conduct.

Related: Ohio Rules of Civil Procedure
Ohio Rules of Civil Procedure

The procedural rules governing civil litigation in Ohio courts, addressing pleading, service, discovery, and judgment, and applied alongside local rules and statutes.

Related: Ohio Board of Professional Conduct