common law

Also known as customary law system, common law system, case law system, custom, convention, tradition, Anglo-American law

law created by judicial precedent

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Common law is a legal system built on court decisions and judicial precedent rather than written statutes, meaning that how judges rule in cases becomes the foundation for how future similar cases are decided. It matters because it provides consistency and predictability in the legal system, allowing people and businesses to understand their rights and obligations based on established court rulings over time.

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P8168: Neoneli
Commons category: Common law

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Legal systems of the world, with common law systems in red Common law is the body of law primarily developed through judicial decisions rather than statutes. Although common law may incorporate certain statutes, it is largely based on precedent—judicial rulings made in previous similar cases. The presiding judge determines which precedents to apply in deciding each new case.

Common law is deeply rooted in the principle of stare decisis ("to stand by [things] decided"), where courts follow precedents established by previous decisions. When a similar case has been resolved, courts typically align their reasoning with the precedent set in that decision. However, in a "case of first impression" with no precedent or clear legislative guidance, judges are empowered to resolve the issue and establish a new precedent.