Cross Claim Law and Legal Definition

A cross-claim is a claim by a party against a party on the same side of a lawsuit, such as when a defendant sues another defendant named by the plaintiff in a lawsuit. Cross-claims against co-parties are governed in the federal district courts and in most state trial courts by Rules of Civil Procedure. Cross-claims are litigated by parties on the same side of the main litigation, while counter-claims are litigated between opposing parties to the principal action.