Explanation
Answer: C - as a 35 U.S.C. § 102(g) rejection requires actual reduction to practice by another, and lack of abandonment, suppression, or concealment. MPEP § 2138 states “35 U.S.C. 102(g) may form the basis for an ex parte rejection if: (1) the subject matter at issue has been actually reduced to practice by another before the applicant's invention; and (2) there has been no abandonment, suppression or concealment. See, e.g., Amgen, Inc. v. Chugai Pharmaceutical Co., 927 F.2d 1200, 1205, 18 USPQ2d 1016, 1020 (Fed. Cir. 1991); New Idea Farm Equipment Corp. v. Sperry Corp., 916 F.2d 1561, 1566, 16 USPQ2d 1424, 1428 (Fed. Cir. 1990); E.I. DuPont de Nemours & Co. v. Phillips Petroleum Co., 849 F.2d 1430, 1434, 7 USPQ2d 1129, 1132 (Fed. Cir. 1988); Kimberly-Clark v. Johnson & Johnson, 745 F.2d 1437, 1444-46, 223 USPQ 603, 606-08 (Fed. Cir. 1984).” (A) is incorrect, as actual reduction to practice is not sufficient to establish a 35 U.S.C. § 102(g) rejection where the subject matter has been abandoned, suppressed, or concealed. MPEP § 2138. (B) is incorrect, as abandonment, suppression, or concealment is not sufficient to establish a 35 U.S.C. § 102(g) rejection where the subject matter has been reduced to practice in that conception alone is not sufficient. See Kimberly-Clark v. Johnson & Johnson, 745 F.2d 1437, 1445, 223 USPQ 603, 607 (Fed. Cir. 1984). MPEP § 2138. (D) is incorrect because no prior patent application is required for a § 102(g) rejection. MPEP § 2138. Similarly, (E) is incorrect, because no prior patent application nor issued patent is required for a rejection under 35 U.S.C. § 102(g).