Walker Process claim.Patents. A counterclaim in an infringement suit, seeking a declaratory judgment that the patent is invalid because its owner defrauded the Patent Office. • The claim is based on antitrust law, alleging that the patentee wrongfully tried to monopolize a market. Walker Process Equip., Inc. v. Food Mach. & Chem., 382 U.S. 172, 86 S.Ct. 347 (1965). — Also termed Walker Process defense.
[Blacks Law 8th]