Appeal No. 95-3917 Application 07/861,144 that appellants' circuit is not shown in Grebene's discussion of trimming is not probative of long-felt need. Long felt need must be for a solution to a real problem which has been recognized in the prior art or in the industry. See generally E.W. Walker, Objective Evidence of Nonobviousness: The Elusive Nexus Requirement (Part II), 69 J. Pat. Off. Soc'y 230, 230-33 (May 1987). Digitally controlled resistors and capacitors were well known in the art as the many references in the record show. For the reasons stated above, the rejection of dependent claim 5 is sustained. - 12 -Page: Previous 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NextLast modified: November 3, 2007