A party to a lawsuit who wins in the trial or lower court. The appellee files a brief in response to the appellant's brief that explains why the appellate court should affirm the lower court or not hear the matter at all.
A party to a lawsuit who wins in the trial court -- or sometimes on a first appeal -- only to have the other party (called the appellant) file for an appeal. An appellee files a written brief and often makes an oral argument before the appellate court, asking that the lower court's judgment be upheld. In some courts, an appellee is called a respondent.
An appellee, or respondent, is the party to an appeal in which a lower court judgment is in its favor. The appellee's opponent on appeal is the appellant. The appellee is required to respond to the petition, oral arguments, and legal briefs of the appellant.