United States v. United States Gypsum Co.

United States v. United States Gypsum Co. was a patent–antitrust case in which the United States Supreme Court decided, first, in 1948, that a patent licensing program that fixed prices of many licensees and regimented an entire industry violated the antitrust laws, and then, decided in 1950, after a remand, that appropriate relief in such cases did not extend so far as to permit licensees enjoying a compulsory, reasonable–royalty license to challenge the validity of the licensed patents. The Court also ruled, in obiter dicta, that the United States had standing to challenge the validity of patents when a patentee relied on the patents to justify its fixing prices. It held in this case, however, that the defendants violated the antitrust laws irrespective of whether the patents were valid, which made the validity issue irrelevant.