Appeal No. 1997-1378 Application No. 08/065,328 Turning to a consideration of dependent claims 6, 7, 16, and 17 which are directed to the use of a background noise factor in determining signal quality, we sustain the obviousness rejection of these claims as well. In the Examiner’s analysis (Answer, page 5), the skilled artisan having been motivated by a desire to increase the accuracy of signal, quality determination in the combined system of Natarajan and Imaseki , would have found it obvious to utilize5 a background noise factor in determining signal quality as taught by Stengel. In our view, the Examiner’s line of reasoning is reasonable enough to establish a prima facie case of obviousness so as to shift the burden to Appellants to come forward with arguments and/or evidence to rebut the prima facie case. Appellants’ initial argument in response (Brief, page 17) contends that, contrary to the Examiner’s assertion, Stengel does not disclose all of the recited limitations of the 266-67 (CCPA 1961); In re Boyer, 363 F.2d 455, 458, n.2, 150 USPQ 441, 444, n.2 (CCPA 1966). 5As discussed supra, it is our finding that the teachings of Natarajan and Imaseki are cumulative to each other. 9Page: Previous 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NextLast modified: November 3, 2007