United States v. Paramount Pictures, Inc., 334 US 131 (1948) (also known as the Hollywood Antitrust Case of 1948, the Paramount Case, the Paramount Decision or the Paramount Decree) was a landmark United States Supreme Court antitrust case that decided the fate of movie studios owning their own theatres and holding exclusivity rights on which theatres would show their films. It would also change the way Hollywood movies were produced, distributed, and exhibited. The Court held in this case that the existing distribution scheme was in violation of the antitrust laws of the United States, which prohibit certain exclusive dealing arrangements.