Appeal No. 2005-0171
Application No. 10/064,380
(Answer, pages 6, 7, 20, and 21) the obviousness to one of ordinary
skill to include transformers, as taught by Kurusu, in the system
of Chatelot, relying on the general principle that transformers are
well known to provide an isolation feature that serves to protect
circuit elements from damage.
Although we do not dispute the Examiner’s generalized
assertion that transformers can be used to provide isolation among
circuit elements, we agree with Appellants (Brief, page 95) that
the Examiner has not established proper motivation for the proposed
combination of Chatelot and Kurusu. The disclosure of Chatelot is
directed to coil and coupling circuitry for communication between a
tag and a reader which, as recognized by the Examiner, lacks any
disclosure of a transformer coupling. On the other hand, Kurusu is
directed to an overvoltage protection circuit which, although
including a transformer 17, utilizes the transformer only as a
coupling connection from filter 13 to transistor 16. Given the
fact that Chatelot and Kurusu are directed to different problems in
the communication art, with disparate solutions to such problems,
it is our view that any attempt to combine them could come only
from Appellants’ own disclosure and not from any teaching or
suggestion in the references themselves.
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