Manners v. Morosco, 252 U.S. 317 (1920), was a United States Supreme Court case with two principal holdings. First, the copyright transfer contract in question was not limited to five years because the agreement dealt in minimum requirements. Secondly, the transfer of the copyright for the production of a play on stage did not grant the ability to make a motion picture based on the play. However, a grant of exclusivity implies a negative guarantee that the original creator will not do anything that may adversely affect that exclusivity, meaning the author forfeited their own ability to authorize a motion picture production. The Court enjoined both parties from making a film version.