See also In re Yarn Processing Patent Validity Litig., 541 F.2d 1127, 1135 (5th Cir. 1976) (“But in this case, if the patents are assumed to be valid, then the restrictions on sale were within the scope of the patent grant because they were applied to a manufacturing licensee . . . and because they did no more than to prevent contributory infringement by resale to unlicensed users. [read post]