Stare decisis is the idea that a principle or a rule established in previous legal cases is either binding or persuasive for a court in subsequent cases that deal with a similar subject matter. This principle is derived from common law, and it is closely related to that of the doctrine of precedent. This is one of the most important principles of law in common law legal systems, due to the fact that respecting it ensures that the administration of the law is consistent and fair.
