Mills Music, Inc. v. Snyder, 469 U.S. 153 (1985), was a United States Supreme Court case in which the Court held that if the author of a work authorizes derivatives, the terms negotiated in exchange for that grant stand even if the grant is later rescinded.

[further explanation needed][1] The case was a dispute regarding publishing royalties for the popular song "Who's Sorry Now?

", which Mills Music had licensed (through mechanical licenses) to recording companies, who created records of the song, or derivative works; after the death of Ted Snyder, the song's composer, his heirs terminated the agreement with Mills Music.

Mills, through the Harry Fox Agency, sued in federal court in New York, where it won, but was overturned in the Second Circuit, before finally appealing to the Supreme Court, which granted certiorari in March 1984.

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