Appeal No. 95-3684 Application 08/110,273 Krauss teaches or suggests a means for regulating temperature or a delivery means including a first and second pump of different pumping capacity. Thus, the Examiner has failed to show that the prior art suggested the desirability of the Examiner's proposed modification. We are not inclined to dispense with proof by evidence when the proposition at issue is not supported by a teaching in a prior art reference or shown to be common knowledge of unquestionable demonstration. Our reviewing court requires this evidence in order to establish a prima facie case. In re Knapp-Monarch Co., 296 F.2d 230, 232, 132 USPQ 6, 8 (CCPA 1961); In re Cofer, 354 F.2d 664, 668, 148 USPQ 268, 271-72 (CCPA 1966). We have not sustained the rejection of claim 1 under U.S.C. � 102 or the rejection of claims 2 through 23 under 35 U.S.C. � 103. Accordingly, the Examiner's decision is reversed. REVERSED 8Page: Previous 1 2 3 4 5 6 7 8 9 10 NextLast modified: November 3, 2007