Appeal No. 1997-3416 Page 5
Application No. 08/339,340
of Matsumoto that contains a phytic acid component and an
aminobenzenesulfonic acid. Matsumoto teaches that the
treating solution is used after a development step, and prior
to a burning-in treatment of a photosensitive lithographic
plate to prevent background stains (column 3, lines 37-68).
Here, we note that the examiner does not specifically
address or satisfactorily explain why one of ordinary skill in
the art would regard the teachings of surfactant alternatives
for the particular treating solution of Matsumoto to be
applicable to the disparate developer solution of BP '830
from the combined references' teachings.
Perhaps more significantly, the examiner has not pointed
out any teaching of any of the references that suggest an
anionic surface active agent that would be embraced by
appellants' claim. In this regard, we note that the alkyl
diphenyl ether disulfonates generically referred to by
Matsumoto do not particularly suggest a diphenyl ether
compound having an ammonium sulfonate group and that is
further limited by the formula of the appellants' claim 16.
The examiner has not established where the references furnish
a suggestion or motivation for selecting an anionic surface
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