Authorities Cited: United States Patent and Trademark Office U.S. Patent No. 4,774,663 U.S. Patent No. 5,832,461 United States Code 28 U.S.C. § 1295(a)(4)(A) 35 U.S.C. § 103 Supreme Court 383 U.S. 301, 323-324 402 U.S. 313, 329 439 U.S. 322, 326-333 449 U.S. 90, 95 464 U.S. 154 464 U.S. 165, 170 Circuit Courts 740 F.2d 1569, 1571 30 F.3d 1459 73 F.3d 1085, 1088 138 F.3d 1448, 1455 160 F.3d 1339, 1340 203 F.3d 1305, 1308 223 F.3d 1360, 1365-1366 319 F.3d 1334, 1338 415 F.3d 1303 439 F.3d 1312, 1319