In law, an appeal is a process for making a formal challenge to an official decision.The specific procedures for appealing, including even whether there is a right of appeal from a particular type of decision, can vary greatly from country to country. Even within a jurisdiction, the nature of an appeal can vary greatly depending on the type of case.An appellate court is a
court that hears cases on appeal. Depending on the particular legal rules that apply to each circumstance, a party to a court case who is unhappy with the result might be able to challenge that result in an appellate court on specific grounds. These grounds typically could include errors of
law,
fact, or procedure (in the United States,
due process).
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