United Mine Workers of America v. Gibbs

Case Date: 07/22/1966

United Mine Workers of America v. Gibbs, 383 U.S. 715 (1966), was a case in which the Supreme Court of the United States held that in order for a United States district court to have pendent jurisdiction over a state-law cause of action, state and federal claims must arise from the same "common nucleus of operative fact" and the plaintiff must expect to try them all at once. This case was decided before the existence of the current supplemental jurisdiction statute, 28 U.S.C. § 1367.