The principle of stare decisis can be divided into two components:
The first is the rule that a decision made by a higher court is binding precedent which a lower court cannot overturn.
The second is the principle that a court should not overturn its own precedents unless there is a strong reason to do so and should be guided by principles from lateral and lower courts. The second principle is an advisory one which courts can and do occasionally ignore.
===Stare decisis secara menegak===
Generally, a common law court system has [[trial court]]s, intermediate [[appellate court]]s and a [[supreme court]]. The lower courts administer most day-to-day justice. The lower courts are bound to follow precedents established by the appellate court for their region and the supreme court.
Appellate courts are only bound to follow supreme court decisions. The application of the doctrine of stare decisis from a higher court to a lower court is sometimes called ''vertical stare decisis''.
===Stare decisis secara mendatar===▼
===Stare decisis secara mendatar===
In the [[United States federal court system]], the intermediate appellate courts are divided into "circuits". Each panel of judges on the [[United States court of appeals|court of appeals]] for a circuit is bound to follow the prior appellate decisions of the same circuit. Precedents of a United States court of appeals may be overruled only by the court ''[[en banc]],'' that is, a session of all the active appellate judges of the circuit, or by the [[United States Supreme Court]].