Appeal No. 1999-1101 Application 08/727,125 Next, we determine whether Appellants' arguments demonstrate insufficient evidence of prima facie obviousness. See In re Rouffet, 149 F.3d 1350, 1355, 47 USPQ2d 1453, 1455 (Fed. Cir. 1998) ("On appeal to the Board, an applicant can overcome a rejection by showing insufficient evidence of prima facie obviousness or by rebutting the prima facie case with evidence of secondary indicia of nonobviousness."). Our discussion of the claims is limited to the arguments in the brief. Under U.S. Patent and Trademark Office rules, Appellants' brief is required to specify the particular limitations in the rejected claims which are not described in the prior art or rendered obvious over the prior art. See 37 CFR § 1.192(c)(8)(iv) (1997). Cf. In re Baxter Travenol Labs., 952 F.2d 388, 391, 21 USPQ2d 1281, 1285 (Fed. Cir. 1991) ("It is not the function of this court to examine the claims in greater detail than argued by an appellant, looking for nonobvious distinctions over the prior art."); In re Wiechert, 370 F.2d 927, 936, 152 USPQ 247, 254 (CCPA 1967) ("This court has uniformly followed the sound rule that an issue raised below which is not argued in this court, even if it has been properly brought here by a reason of appeal, is - 11 -Page: Previous 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 NextLast modified: November 3, 2007