Rolls-Royce Ltd. v. United States

The Government has not filed an answer to the petition, but instead has moved for summary judgment based on the allegation that the patent claim sued upon is invalid. The United Aircraft Corporation, named by plaintiff in its petition as one of several accused manufacturers, has intervened and filed its own motion for summary judgment. The case is before us for the disposition of these motions.

Plaintiff is a British corporation. It is the owner of Gresham, Dunlop and Wheeler U.S. Patent No. 2,712,498, the patent here in suit, for “Nickel Chromium Alloys Having High Creep Strength At High…