Interference 103,781 B. Senior Party Adang’s Case-In-Chief For Priority I. Adang’s Reduction to Practice Adang acknowledges that it did not actually reduce an invention of Count 2 to practice prior to the September 9, 1988, filing date of the earliest application upon which Adang is entitled to rely for benefit (AB 43). Accordingly, to make its case for priority of the invention of Count 2 of this interference, Adang must show that it conceived of the invention of Count 2 prior to December 12, 1986, the date the evidence shows that Fischhoff first conceived of the invention of Count 2, and that it exercised reasonable diligence toward constructive reduction to practice of the invention of Count 2 throughout the critical period beginning just before Fischhoff’s December 12, 1986, date of conception, until Adang’s constructive reduction to practice on September 9, 1988. First quoting Christie v. Seybold, 55 F. 69, 76 (6th Cir. 1883)(Taft, J.), and then quoting Price v. Symsek, 988 F.2d 1187, 1190, 26 USPQ2d 1031, 1033 (Fed. Cir. 1993), the Federal Circuit instructed in Mahurkar v. C.R. Bard, Inc., 79 F.3d 1572, 1577, 38 USPQ2d 1288, 1290 (Fed. Cir. 1996): [T]he person “who first conceives, and, in a mental sense, first invents . . . may date his patentable invention back to the time of its conception, if he connects the conception with the reduction to practice by reasonable diligence on his part, so that they are substantially one continuous act.” . . . Stated otherwise, priority of invention “goes -84-Page: Previous 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 NextLast modified: November 3, 2007