Appeal No. 1999-2225 Application No. 08/815,441 establishing a prima facie case of non-enablement under the first paragraph of 35 U.S.C. § 112 rests on the examiner. In re Oetiker, 977 F.2d 1443, 1445, 24 USPQ2d 1443, 1444 (Fed. Cir. 1992). The predecessor of our reviewing court has stated as follows: [A] specification disclosure which contains a teaching of the manner and process of making and using the invention in terms which correspond in scope to those used in describing and defining the subject matter sought to be patented must be taken as in compliance with the enabling requirement of the first paragraph of Section 112 unless there is reason to doubt the objective truth of the statements contained therein which must be relied on for enabling support. In re Marzocchi, 439 F.2d 220, 223, 169 USPQ 367, 369 (CCPA 1971). Thus, it is only upon the advancement of acceptable reasoning on the part of the examiner that the burden of proving enablement shifts to the appellants. In re Strahilevitz, 668 F.2d 1229, 1232, 212 USPQ 561, 563 (CCPA 1982). Here, the examiner has not met the threshold initial burden of proof. "Although not explicitly stated in section 112, to be enabling, the specification of a patent must teach those skilled in the art how to make and use the full scope of the claimed invention without 'undue experimentation.'" 1 In re Wright, 999 1 The question of whether making and using the invention would have required "undue experimentation" depends on several underlying factual inquiries including: (1) the quantity of experimentation necessary; (2) the amount of direction or guidance presented; (3) the presence or absence of working examples; (4) 4Page: Previous 1 2 3 4 5 6 7 NextLast modified: November 3, 2007