Appeal No. 2000-1703
Application No. 08/963,545
the teachings of that reference. In re Kotzab, 217 F.3d 1365,
1370, 55 USPQ2d 1313, 1316-17 (Fed. Cir. 2000), citing B.F.
Goodrich Co. v. Aircraft Breaking Sys. Corp., 72 F.3d 1577, 1582,
37 USPQ2d 1314, 1318 (Fed. Cir. 1996). Our reviewing court
requires this evidence in order to establish a prima facie case.
In re Piasecki, 745 F.2d 1468, 1471-72, 223 USPQ 785, 787-88
(Fed. Cir. 1984); In re Cofer, 354 F.2d 664, 668, 148 USPQ 268,
271-72 (CCPA 1966).
A review of Gutzwiller reveals that the reference is related
to a standardized protocol for sending control messages in a
building over standard media such as ac power lines, telephone
lines, cables and radio or infra-red links (page 109). Gutzwiller
further describes a home computer or controller that communicates
with different kinds of remotely located appliances over the
power lines (id.). Gutzwiller further describes other media for
conveying control signals like baseband communication on wires,
such as twisted pairs or coaxial cables, as well as infrared or
radio frequency when mobility is essential (page 110, right-hand
column). Although Gutzwiller indicates that all stations or
appliances are connected to the home controller via power-line
carrier, an infrared remote control may be used to send a command
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