Authorities Cited: United States Patent and Trademark Office U.S. Patent No. 3,940,495 U.S. Patent No. 5,812,643 U.S. Patent No. 6,314,169 United States Code 35 U.S.C. § 102(b) 35 U.S.C. § 112 35 U.S.C. § 120 Supreme Court 477 U.S. 242, 248 Circuit Courts 725 F.2d 1350, 1360 772 F.2d 1570, 1573 823 F.2d 500, 505 935 F.2d 1555, 1563-1564 38 F.3d 551, 555 52 F.3d 1035, 1038 66 F.3d 292, 297 107 F.3d 1565, 1571-1572 156 F.3d 1154, 1159 181 F.3d 1291, 1302-1303 230 F.3d 1320, 1323 264 F.3d 1111, 1118-1120 308 F.3d 1267, 1277 339 F.3d 1373, 1379 429 F.3d 1052, 1072-1073 481 F.3d 1371, 1377 586 F. Supp. 1176, 1189