Appeal No. 1999-0194 Application No. 08/436,626 Based on the above, the examiner reasonably concluded that the evidence was sufficient to meet the PTO’s initial burden of going forward by establishing a prima facie case that the claimed invention was in public use and/or on sale in this country more than one year prior to the filing date of the present application. See In re Caveney, 761 F.2d 671, 674-75, 226 USPQ 1, 3 (Fed. Cir. 1985)(when the issue of “public use” or “on sale” is raised with respect to a claimed invention in a patent application, the burden on the PTO is only one of a preponderance of the evidence). II. Appellant argues that the foregoing activity did not constitute a “public use” or “on sale” bar under 35 U.S.C. § 102(b) “because the Conewago Creek bridge represents an experimental use or sale of the invention . . . and one stage in a continuing evaluation thereof” (brief, page 7). In this regard, appellant considers that “the evidentiary record formed by these two declarations shows that the Conewago Creek bridge was an experimental use and sale of the invention and a part of an evaluation of an invention” (brief, page 8). 13Page: Previous 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 NextLast modified: November 3, 2007