Appeal No. 1999-2028 Application No. 08/769,036 has been adopted as a national standard by the cellular industry." In light of these admissions, it would have been obvious to the skilled artisan to modify the handset of Braitberg to accommodate CDPD type packet data signals to conform with the national standard for such data transmission. The level of the skilled artisan should not be underestimated. See In re Sovish, 769 F.2d 738, 743, 226 USPQ 771, 774 (Fed. Cir. 1985). Accordingly, we will affirm the rejection of claim 67, and of the claims grouped therewith, claims 76 through 82, 88, 90, and 92. As to the second group of claims, appellants argue (Brief, page 12) that Braitberg fails to show the analog cellular signal circuitry and the CDPD signal circuitry operatively coupled to a single, common radio frequency transceiver, as recited in claim 68. However, as indicated above, Braitberg discloses (column 12, lines 58-61) that RF signals are received by the telephone via an RF air-link and telephone 10 discriminates between voice and data information. In other words, both types of signals are received by the same RF air-link. Further, Braitberg discloses (column 11, lines 20-35) that the invention allows the cellular phone "to 6Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007