Authorities Cited: United States Patent and Trademark Office U.S. Patent No. 4,757,267 U.S. Patent No. 5,506,897 U.S. Patent No. 5,588,048 U.S. Patent No. 5,805,689 United States Code 28 U.S.C. § 1295(a)(1) 35 U.S.C. § 261 35 U.S.C. § 282 35 U.S.C. § 284 35 U.S.C. § 285 Supreme Court 94 U.S. 92, 96 227 U.S. 8, 37-38 434 U.S. 412, 421-422 508 U.S. 49, 60 Circuit Courts 776 F.2d 320, 327 54 F.3d 1570, 1576-1577 94 F.3d 1553, 1555 138 F.3d 1448, 1456 153 F.3d 1318, 1336-1337 182 F.3d 1340, 1345-1346 196 F.3d 1226, 1242 264 F.3d 1344, 1356 276 F.3d 1319, 1325 308 F.3d 1304, 1316 310 F.3d 1360, 1371 334 F.3d 1314, 1325-1326 362 F.3d 1367, 1375-1377 415 F.3d 1303, 1312-1317 449 F.3d 1360, 1364 483 F.3d 1328, 1337 500 F.3d 1369, 1374 507 F.3d 1340, 1346 523 F.3d 1323, 1333 524 F.3d 1254, 1260-1261