Legal Studies key terms

A previously decided court case that serves as an authority for deciding later cases involving similar facts or legal issues. Courts generally must follow precedent from higher courts in the same jurisdiction.

The doctrine that courts should adhere to established precedent when deciding new cases, promoting consistency and predictability. Lower courts are bound by decisions of higher courts within their jurisdiction.

Judge-made law developed through court decisions over time rather than through statutes. It forms the foundation of legal systems in many English-speaking jurisdictions and evolves as courts decide new cases.

A written law enacted by a legislative body such as a parliament or congress. Statutes typically take precedence over conflicting common law and are interpreted by courts when disputes arise.

A rule issued by an administrative agency under authority granted by a statute. Regulations carry the force of law and provide detailed implementation of broader legislative mandates.

The fundamental law establishing the structure of government, its powers, and the rights of individuals. All other laws must conform to it, and courts often have authority to strike down inconsistent legislation.

The power of courts to examine laws and government actions and declare them invalid if they violate the constitution or exceed legal authority. This power is central to constitutional governance.

The authority of a court to hear and decide a particular case. It may depend on geography, the type of dispute, the amount in controversy, or the parties involved.

A court's power to hear a particular type of case, such as criminal, family, or small claims matters. Unlike other jurisdictional issues, it cannot be waived by the parties.

The geographic location or specific court where a case should be heard. Venue rules ensure cases are tried in a fair and convenient forum, distinct from jurisdiction.

The legal right of a party to bring a lawsuit because they have a sufficient connection to and harm from the challenged action. Courts require injury, causation, and redressability in many systems.

The set of facts and legal grounds that give a person the right to sue another. It identifies the legal theory, such as breach of contract or negligence, on which the claim rests.

Formal written statements filed with a court by the parties, setting out claims, defenses, and relevant facts. Pleadings frame the issues the court will resolve at trial.

The pretrial process by which parties exchange information, documents, and evidence relevant to a case. It helps narrow issues and prevents surprise at trial.

The obligation of a party to prove a disputed fact or claim to the required standard. In criminal cases the prosecution usually bears this burden beyond a reasonable doubt.

The high standard of proof required in criminal cases, meaning the evidence must leave no reasonable uncertainty about the defendant's guilt. It protects against wrongful conviction.

The standard of proof in most civil cases, requiring that a claim be more likely true than not, typically described as greater than fifty percent probability. It is lower than clear and convincing evidence.

The principle that a person accused of a crime is treated as innocent until proven guilty by competent evidence. The prosecution must overcome this presumption at trial.

The mental element of a crime, referring to the defendant's intent, knowledge, recklessness, or negligence at the time of the act. Most serious crimes require proof of a culpable state of mind.

The physical act or unlawful omission that constitutes the external element of a crime. It must be voluntary and is typically paired with a required mental state.

The legal responsibility of a person for a criminal offense, established by proving the required conduct, mental state, causation, and absence of valid defenses.

A legal argument or set of facts presented by a defendant to avoid liability or reduce culpability. Defenses may justify conduct, excuse it, or challenge the sufficiency of the prosecution's case.

A defense permitting a person to use reasonable force to protect against an imminent threat of harm. The response must generally be proportionate to the danger faced.

A legally enforceable agreement between two or more parties involving mutual promises or obligations. Valid contracts generally require offer, acceptance, consideration, and legal capacity.

A clear proposal to enter into a contract on specified terms, made with the intention that it becomes binding upon acceptance. It must be communicated to the offeree.

An unqualified agreement to the terms of an offer, communicated to the offeror. A purported acceptance that changes terms is generally treated as a counteroffer.

Something of value exchanged between contracting parties, such as money, services, or a promise. It distinguishes a binding contract from a gratuitous promise.

Failure to perform a contractual obligation without lawful excuse. The non-breaching party may seek remedies such as damages, specific performance, or cancellation.

Monetary compensation awarded to a party for loss or injury caused by another's wrongful conduct or breach. Courts aim to place the injured party in the position they would have occupied absent the wrong.

A civil wrong, other than breach of contract, that causes harm and gives rise to liability. Common torts include negligence, assault, defamation, and trespass.

Failure to exercise the care that a reasonably prudent person would exercise in similar circumstances, resulting in harm. It generally requires a duty, breach, causation, and damages.

A legal obligation to avoid acts or omissions that could foreseeably harm others. Whether a duty exists depends on the relationship between the parties and the foreseeability of harm.

The link between a defendant's conduct and the harm suffered, requiring both factual cause and, in many cases, proximate cause. It determines whether liability can fairly be attributed.

Liability imposed without proof of fault or intent, typically for inherently dangerous activities or defective products. The claimant need only show that the harm occurred and was caused by the defendant's conduct.

The legal rights a person holds over things, including land, buildings, and personal possessions. Property law governs ownership, transfer, use, and the resolution of competing claims.

A contract granting a tenant the right to occupy and use property for a specified period in exchange for rent. It sets out the rights and obligations of both landlord and tenant.

The right to possess and use land or premises under a lease or rental agreement. Tenancies may be fixed-term, periodic, or at will, each with different termination rules.

The legal process by which a landlord removes a tenant from rented premises, usually for nonpayment or breach of lease terms. Most jurisdictions require proper notice and court proceedings.

A right to use another person's land for a specific purpose without owning it, such as a right of way. Easements may be created by grant, prescription, or necessity.

A legally recognized relationship between two people that creates rights and obligations regarding property, support, inheritance, and children. Requirements and consequences vary by jurisdiction.

The legal dissolution of a marriage, ending the marital relationship and triggering division of property, support arrangements, and parenting determinations. Grounds and procedures differ across jurisdictions.

The legal right and responsibility to care for and make decisions about a child. Courts allocate custody based on the child's best interests, considering factors such as stability and parental capability.

Financial support paid by one spouse to the other after separation or divorce, also called spousal maintenance. Awards depend on factors such as need, income, and length of marriage.

An agreement between employer and employee setting out terms such as duties, pay, hours, and termination conditions. Statutory rights may override terms that are less favorable to the employee.

Dismissal of an employee in violation of a contract, statute, or public policy. Remedies may include reinstatement, back pay, or damages, depending on the jurisdiction.

A contractual provision restricting an employee from working for competitors or starting a competing business for a set period and area. Courts enforce such clauses only if reasonable.

The duty to keep certain information secret and not disclose it without authorization. Lawyers, doctors, and other professionals owe confidentiality to clients under ethics rules.

A situation where a professional's personal interests or duties to another party could improperly influence their judgment. Lawyers must identify and avoid or disclose such conflicts.

A rule protecting confidential communications between a lawyer and client from compelled disclosure. It encourages full and frank disclosure so the lawyer can provide effective representation.