Authorities Cited: United States Patent and Trademark Office U.S. Patent No. 4,892,549 U.S. Patent No. 5,133,772 U.S. Patent No. 5,192,324 U.S. Patent No. 5,824,100 United States Code 28 U.S.C. § 1295(a)(1) Supreme Court 517 U.S. 370 529 U.S. 460, 469 Circuit Courts 522 F.2d 885, 895 774 F.2d 2007 52 F.3d 967, 983-985 78 F.3d 1575, 1580 138 F.3d 1448, 1456 164 F.3d 830, 840-841 194 F.3d 1367, 1370-1372 242 F.3d 1337, 1342-1344 279 F.3d 1022, 1029 299 F.3d 1313, 1327-1328 319 F.3d 1357, 1361 334 F.3d 1294, 1301 343 F.3d 1364, 1370 358 F.3d 898, 906 381 F.3d 1111, 1115 415 F.3d 1303, 1312-1323 465 F.3d 1312, 1319 498 F.3d 1307, 1313-1314 501 F.3d 1327, 1337 522 F.3d 1279, 1287 532 F.3d 1330