Appeal 2007-2258
Application 09/738,054
communications link 10. Only two subsystems are shown for simplicity; a
plurality of subsystems 11 may be connected to subsystem 12 (col. 3, ll.
53-58).
6. Subsystem 11 illustratively comprises a switching node 33, for
example a local area network (LAN) server, a broadband multi-media
switching hub, or an asynchronous transfer mode (ATM) packet switch, that
provides data or multi-media communications services to a plurality of
endpoints such as user workstations 37-39 (col. 4, ll. 9-14).
7. Chau further discloses that communication link 10
interconnects subsystems 11 and 12 as an ISDN link that terminates at
switching node 33 in an ISDN port circuit and protocol converter 40. ISDN
port circuit and protocol converter 40 not only terminate the ISDN
transmission protocol of PRI link 10, but convert between the ISDN
transmission protocol and the internal transmission protocol of node 33 (col.
4, ll. 32-40)
PRINCIPLES OF LAW
The test for obviousness is what the combined teachings of the
references would have suggested to one of ordinary skill in the art. See In re
Kahn, 441 F.3d 977, 987-988, 78 USPQ2d 1329, 1336 (Fed. Cir. 2006), In
re Young, 927 F.2d 588, 591, 18 USPQ2d 1089, 1091 (Fed. Cir. 1991) and
In re Keller, 642 F.2d 413, 425, 208 USPQ 871, 881 (CCPA 1981).
“The combination of familiar elements according to known methods
is likely to be obvious when it does no more than yield predictable results.”
Leapfrog Enter., Inc. v. Fisher-Price, Inc., 485 F.3d 1157, 1161,
5
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