A Practice Note addressing the process of appealing the grant or denial of a preliminary injunction or a temporary restraining order (TRO) in Illinois circuit court civil litigation. This Note explains the issues counsel should consider before filing an appeal, the procedures for interlocutory appeals of orders granting, denying, modifying, dissolving, or refusing to dissolve or modify preliminary injunctive relief, the process for obtaining a stay of enforcement pending appeal, the standard of appellate review, and possible outcomes of an appeal.