Appeal No. 98-0194 Page 7
Application No. 08/132,940
The obviousness issues
Claims 1, 13 and 18
We sustain the rejection of claims 1, 13 and 18 under
35 U.S.C. § 103. 3
Claim 1 recites an electrosurgical generator comprising,
inter alia, an active electrode, an active lead, a return
electrode, a return lead, a user control and an automatic
control circuit. Claim 1 further recites that the automatic
control circuit includes, inter alia, a voltage sensing
circuit, a current sensing circuit, a multiplier, a clock, an
integrator and a correlation circuit. The correlation circuit
provides a feedback signal which alters the supply of energy
to the active and return leads when the amount of energy
calculated equals a reference signal sent from the user
control.
3For reasons set forth infra, we believe that claims 1,
13 and 18 are unpatentable over the combined teachings of
Bowers and Ensslin. Accordingly, we consider the teachings of
Rexroth and Auth to be cumulative with respect to these
claims.
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