Appeal No. 2002-1318
Application No. 08/693,662
removed, we find that the received television broadcast signal
was broadcast over the airways from the service provider's
transmitter, which we consider to be an RF transmitter, and is
not a data signal propagated from a first power line to a second
power line, without the use of an RF transmitter on the first
power line.
In addition, we note that all of the claims under appeal
require sensing of data signals propagated from the first power
line without the use of an RF transmitter on the first power
line. For the reasons above, this limitation is not suggested by
the applied prior art. In that regard, while Dockery does teach
that a power line used in a communications system may also be
used as an aerial antenna, as advanced by the examiner (answer,
page 4), the transmitted signal over the power line that
generates the RF signal propagated to a range of 200 feet from
the power line is an RF transmitted signal. Therefore, Dockery
does not teach or suggest that the data signal is propagated from
the first power line and sensed by the receiver without the use
of an RF transmitter. In addition, even if we are incorrect our
interpretation of Dockery, and assuming, arguendo, that Dockery
teaches the sensing of a signal propagated from the first power
line without the use of an RF transmitter, we find that because
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