Appeal No. 2001-0693 Page 5 Application No. 08/898,300 Nemours & Co., 750 F.2d 1569, 1576-77, 224 USPQ 409, 414 (Fed. Cir. 1984), where the court stated: Even if some of the claimed combinations were inoperative, the claims are not necessarily invalid. "It is not a function of the claims to specifically exclude . . . possible inoperative substances . . . .” In re Dinh-Nguyen, 492 F.2d 856, 858-59, 181 USPQ 46, 48 (CCPA 1974) (emphasis omitted). Accord, In re Geerdes, 491 F.2d 1260, 1265, 180 USPQ 789, 793 (CCPA 1974); In re Anderson, 471 F.2d 1237, 1242, 176 USPQ 331, 334-35 (CCPA 1973). Of course, if the number of inoperative combinations becomes significant, and in effect forces one of ordinary skill in the art to experiment unduly in order to practice the claimed invention, the claims might indeed be invalid. See, e.g., In re Cook, 439 F.2d 730, 735, 169 USPQ 298, 302 (CCPA 1971). Again, absent a fact-based explanation from the examiner why the number of possible inoperative embodiments is significant, we do not find that the examiner has established a prima facie case of non-enablement. The decision of the examiner is reversed. REVERSED ) William F. Smith ) Administrative Patent Judge ) ) ) ) BOARD OF PATENT Donald E. Adams ) )) APPEALS AND Administrative Patent Judge ) ) INTERFERENCES Demetra J. Mills ) Administrative Patent Judge ) Brenda H. Jarrell, Esq. Choate, Hall & Stewart Exchange PlacePage: Previous 1 2 3 4 5 6 NextLast modified: November 3, 2007