Interference No. 103,322 final hearing is priority of invention under 35 U.S.C. § 102(g). Burden of Proof The junior party application has been accorded a benefit date of October 17, 1990. The senior party’s effective filing date is May 25, 1990, and the senior party was granted the involved patent on November 26, 1990. Thus, the benefit date accorded the junior party was during the pendency of the senior party’s application. Accordingly, for the junior party to prevail in a priority contest, the junior party must prove priority of invention by a preponderance of the evidence. See Peeler v. Miller, 535 F.2d 647, 651 n.5, 190 USPQ 117, 120 n.5 (CCPA 1976). Accord Bosies v. Benedict, 27 F.3d 539, 541-42, 30 USPQ2d 1862, 1864 (Fed. Cir. 1994). Cf. Price v. Symsek, 988 F.2d 1187, 1194, 26 USPQ 1031, 1036 (Fed. Cir. 1993). 4Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007