Appeal No. 2006-1458 Application No. 10/040,395 Oetiker, 977 F.2d 1443, 1445, 24 USPQ2d 1443, 1444 (Fed. Cir. 1992). With respect to the Examiner’s 35 U.S.C. § 103(a) rejection of appealed independent claim 32 based on the combination of Chiang and Litwin, Appellants asserts that the Examiner has failed to set forth a prima facie case of obviousness since proper motivation for the proposed combination of references has not been established. After reviewing the arguments of record from Appellants and the Examiner, we are in general agreement with Appellants’ position as stated in the Briefs. The Examiner proposes (Answer, page 5) to modify the varactor device of Chiang by making the lightly doped well regions 47 of p-type material as taught by Litwin. According to the Examiner (id.), the ordinarily skilled artisan would have made such a modification in order to form “a depletion-type channel region with good channel modulation sensitivity ....” We agree with Appellants (Brief, page 11; Reply Brief, page 3), however, that neither Chiang nor Litwin has any disclosure that the described devices provide the result asserted by the Examiner nor why such a result would be desirable. The mere fact that the prior art may be modified in the manner suggested by the Examiner 5Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 3, 2007