Appellate jurisdiction is the power of an appellate court to review, amend and overrule decisions of a trial court or other lower tribunal. Most appellate jurisdiction is legislatively created, and may consist of appeals by leave of the appellate court or by right.
Appellate jurisdiction includes the power to reverse or modify the the lower court’s decision. Appellate jurisdiction exists for both civil law and criminal law. In an appellate case, the party that appealed the lower court’s decision is called the appellate, and the other party is the appellee.