Princo Corp. v. International Trade Commission
Patent misuse is a non-statutory defense to claims of patent infringement, and Congress has enacted 35 U.S.C. § 271(d) to limit its application. To be found guilty of patent misuse, the patentee must act to impermissibly broaden the physical or temporal scope of the patent grant with anti-competitive effect. Further, the misuse must be of the patent-in-suit.