Appeal No. 2000-1594
Application No. 08/543,101
terminal (col. 33, line 66 through col. 34, line 1) and a
conventional cellular transmitter transmits an acknowledge
message via the control channel of the cellular network (col. 34,
lines 24-33).
Hara discloses a radio telephone system that reduces channel
to channel interference by using different carriers for both
signal transmission and signal reception (col. 1, lines 49-58).
Levanto, on the other hand, relates to a cellular telephone
system in which the limited range of mobile units is overcome by
using a combination of paging and cellular networks. Levanto
stores paging messages in the exchange of the cellular network
and communicates the stored messages with the mobile unit when
the unit enters the paging range (col. 6, lines 24-47).
As the Federal Circuit states, "[t]he mere fact that the
prior art may be modified in the manner suggested by the Examiner
does not make the modification obvious unless the prior art
suggested the desirability of the modification." In re Fritch,
972 F.2d 1260, 1266 n.14, 23 USPQ2d 1780, 1783-84 n.14 (Fed. Cir.
1992), citing In re Gordon, 733 F.2d 900, 902, 221 USPQ 1125,
1127 (Fed. Cir. 1984). The court further reasons in Karsten Mfg.
Corp. v. Cleveland Gulf Co., 242 F.3d 1376, 1385, 58 USPQ2d 1286,
1293 (Fed. Cir. 2001) that for an invention to be obvious in view
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