Appeal No. 2003-2065 Application 09/881,441 method. Thus, the language in the claim “for comparison at a node with stored test voice information which is the same as the test voice information” are terms which merely set forth the intended use of the signal and do not further limit the characteristic of the claimed signal. Terms merely setting forth intended use, or a property inherent in, an otherwise old composition do not differentiate the claimed composition from those known in the prior art. See In re Pearson, 494 F.2d 1399, 1403, 181 USPQ 641, 644 (CCPA 1974). We further note that Appellants’ claim 11 recites “said signal comprising a plurality of packets at least some of which comprise test voice information.” We note that the term “at least some” does not preclude a signal that comprises a plurality of packets all of which comprise test voice information. Lewis teaches in Figure 1B a packet data network 156 having interconnected with voice terminals 154 and 158 with voice quality performance evaluator 152 connected to both 154 and 158. See column 5, lines 32 through 50. Lewis teaches that the operation of a test of Figure 1B proceeds according to the operations described with reference to Figure 1A. See column 5, lines 51 through 53. Lewis teaches that voice samples are transmitted from the VQPE 152 to voice terminal 154, which codes 7Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NextLast modified: November 3, 2007