Q) Reduction to Practice (4.02.1a)

Question #1 from the April 2003 (AM) patent bar exam is reported by exam takers as a question in the current exam database.

ANSWER: (C) is the most correct. Corona v. Dovan 273 U.S. 692, 1928 CD 252 (1928); MPEP § 2138.05 under the heading “Requirements To Establish Actual Reduction To Practice.” (A) is incorrect. MPEP § 2138.05, under the heading “Requirements To Establish Actual Reduction To Practice.” The same evidence sufficient to establish a constructive reduction to practice is not necessarily sufficient to establish actual reduction to practice, which requires a showing of the invention in a physical or tangible form containing every element of the count. Wetmore v. Quick, 536 F.2d 937, 942 190 USPQ 223 227 (CCPA 1976). (B) is incorrect. MPEP § 2138.05, under the heading “Constructive Reduction To Practice Requires Compliance With 35 U.S.C. 112, First Paragraph.” Kawai v. Metlesics, 489 F.2d 880, 886, 178 USPQ 158, 163 (CCPA 1973). (D) is incorrect. Keizer v. Bradley, 270 F.2d 396, 397, 123 USPQ 215, 216 (CCPA 1959) (the diligence of 35 U.S.C. § 102(g) does not require “an inventor or his attorney to drop all other work and concentrate on the particular invention involved”); MPEP § 2138.06. (E) is incorrect. The diligence of a practitioner in preparing and filing an application inures to the benefit of the inventor. See MPEP § 2138.06, under the heading “Diligence Required In Preparing And Filing Patent Application.” Haskell v. Coleburne, 671 F.2d 1362, 213 USPQ 192,195 (CCPA 1982) (six days to execute and file application was acceptable).