General Legal Legal Terms Glossary
Foundational legal vocabulary that spans multiple doctrinal areas.
Definitions
Stare Decisis
Stare decisis ("to stand by things decided") is the doctrine of precedent requiring courts to follow the legal principles established in prior decisions. Under vertical stare decisis, lower courts must follow the holdings of higher courts in the same jurisdiction. Under horizontal stare decisis, a court follows its own prior decisions. While not absolute, the doctrine promotes predictability, stability, and judicial efficiency. A court may depart from precedent when the prior decision is unworkable, its reasoning has been eroded, or changed circumstances undermine its foundation.
Precedent
Precedent refers to a prior judicial decision that serves as authority for deciding subsequent cases involving similar facts or legal issues. Binding precedent (mandatory authority) comes from a higher court in the same jurisdiction and must be followed. Persuasive precedent (from courts in other jurisdictions, lower courts, or dissenting opinions) may be considered but is not binding. The system of precedent is foundational to the common law tradition and is closely related to the doctrine of stare decisis.
Dicta (Obiter Dictum)
Dicta (singular: dictum) are statements in a judicial opinion that are not necessary to the resolution of the case. While dicta may provide useful commentary or signal how a court might rule on future issues, they are not binding precedent. The distinction between holding (the rule applied to the facts to reach the decision) and dicta (everything else) is critical in legal analysis. Courts and advocates frequently debate whether a particular statement is holding or dictum, as only the holding has precedential force.
Holding
A holding is the court's determination of the specific legal question presented by the facts of the case. It is the rule of law necessary to the decision and constitutes binding precedent under the doctrine of stare decisis. The holding is distinguished from dicta, which are statements not essential to the outcome. Identifying the precise holding of a case is a fundamental skill in legal analysis, as it determines what future courts are bound to follow.
Ratio Decidendi
Ratio decidendi ("the reason for deciding") is the legal principle or reasoning that forms the basis for a court's decision. It is the essential rationale that, combined with the material facts, leads to the court's holding. Only the ratio decidendi of a case is binding on future courts — obiter dicta and broader statements of policy are not. Identifying the ratio decidendi requires careful analysis of which facts the court deemed material and what rule the court applied to reach its conclusion.
Amicus Curiae
An amicus curiae ("friend of the court") is a person or organization that is not a party to a case but offers information, expertise, or legal arguments to assist the court in its decision-making. Amicus briefs are common in appellate courts, particularly the Supreme Court, where they provide perspectives beyond those of the litigants. Court permission or party consent is typically required. Amicus briefs can be influential in shaping the development of the law, especially in cases with broad public significance.
Certiorari
Certiorari (commonly abbreviated as "cert") is a discretionary writ issued by a higher court directing a lower court to send the record of a case for review. In the United States, the Supreme Court uses the writ of certiorari as its primary mechanism for selecting cases. The Court grants certiorari when at least four Justices vote to hear the case (the Rule of Four). Factors considered include circuit splits, important federal questions, and conflicts with Supreme Court precedent. The vast majority of certiorari petitions are denied.
De Novo Review
De novo review ("anew") is a standard of appellate review in which the reviewing court gives no deference to the lower court's decision and examines the issue from scratch. It applies to questions of law, including the interpretation of statutes, contracts, and constitutional provisions. Under de novo review, the appellate court is free to reach its own conclusions. By contrast, findings of fact are typically reviewed for clear error, and discretionary decisions for abuse of discretion.
En Banc
En banc ("by the full bench") refers to a hearing or rehearing before all judges of a court, rather than the usual three-judge panel in the federal circuit courts. En banc review is typically reserved for cases involving questions of exceptional importance or cases where the panel decision conflicts with prior circuit authority. Under Federal Rule of Appellate Procedure 35, an en banc hearing requires a majority vote of the active judges. The Supreme Court always sits en banc.
Injunction
An injunction is an equitable remedy in the form of a court order directing a party to do or refrain from doing a specific act. Preliminary injunctions require the plaintiff to show a likelihood of success on the merits, a likelihood of irreparable harm, that the balance of equities tips in their favor, and that the injunction is in the public interest. Permanent injunctions are granted after a final judgment on the merits. Violation of an injunction may result in contempt of court.
Writ
A writ is a formal written order issued by a court commanding a person or entity to perform or cease performing a specific action. Historically, writs were the primary mechanism for initiating legal proceedings. In modern practice, some writs remain important: habeas corpus (challenging the legality of detention), mandamus (ordering a government official to perform a duty), certiorari (directing a lower court to send the record for review), and prohibition (preventing a lower court from exceeding its jurisdiction).
Subpoena
A subpoena is a court-issued command requiring a person to appear as a witness (subpoena ad testificandum) or produce documents and tangible evidence (subpoena duces tecum). Failure to comply with a subpoena without a valid legal excuse can result in contempt of court sanctions. Under Federal Rule of Civil Procedure 45, a subpoena must be served within certain geographic limits and may be challenged through a motion to quash if it is unreasonable, oppressive, or requires disclosure of privileged information.
Tort Reform
Tort reform refers to legislative and judicial efforts to change the civil justice system to reduce tort litigation and limit damages awards. Common measures include caps on non-economic and punitive damages, restrictions on joint and several liability, modification of the collateral source rule, limits on contingency fees, and statutes of repose. Proponents argue that tort reform reduces frivolous lawsuits and lowers costs, while opponents contend it restricts access to justice and deprives injured parties of fair compensation.
Statute of Limitations
A statute of limitations is a law that sets the maximum time period within which a party must initiate legal proceedings from the date the cause of action accrued. Once the limitations period expires, the claim is time-barred. Limitation periods vary by claim type: personal injury (typically 2-3 years), contracts (4-6 years), and property (often longer). The discovery rule tolls the statute until the plaintiff knew or should have known of the injury. Statutes of limitations promote finality and protect defendants from stale claims.
Laches
Laches is an equitable defense barring a claim when the plaintiff unreasonably delayed in asserting their rights, and the delay caused prejudice to the defendant. Unlike a statute of limitations, which sets a fixed deadline, laches is discretionary and depends on the circumstances. The defendant must show both unreasonable delay by the plaintiff and resulting prejudice (such as loss of evidence, changed circumstances, or detrimental reliance). Laches is most commonly raised in equity proceedings and may bar claims even before the statute of limitations expires.