Appeal No. 95-5067
Application 08/064,575
salt “attacks the activated fluorine-carbon bond of the
diphenyl sulfone” (Kricheldorf ‘83, page 2286). The fluorine
of Kricheldorf ‘83 and ‘84 is attached to an aromatic ring.
There is no disclosure, teaching or suggestion, in the record
before us, that the cesium alkoxide or phenolate would attack
the vinylic fluoride reactant of the primary references.
Accordingly, we find no suggestion or motivation to combine
the primary and secondary references in the manner suggested
by the examiner.
The Saunders secondary reference differs from Kricheldorf
‘83 and ‘84 in disclosing the reaction of a silyl ether with
alkyl halide to form alkyl aryl ethers (page 377). As noted
above, we find no suggestion or motivation to apply the
teachings of Saunders to the reaction of alcohols with the
vinylic fluorides of the primary references. Furthermore,
appellants have submitted Morrison to show that “attempts to
convert aryl or vinyl halides into ... ethers... by treatment
with the usual nucleophilic reagents are also unsuccessful”
(sentence bridging pages 823-24).
For the foregoing reasons, we conclude that the examiner
has failed to establish a prima facie case of obviousness for
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