Appeal No.2003-0078 Page 6
Application No.09/257,066
electrolytes that were singled out as being typical. As
explained above, the mere fact that Falk ‘967 refers to three
other polyvalent salts as exemplifying preferred salts does not
detract from the explicit suggestion in Falk ‘967 to employ
ammonium salt with a reasonable expectation of success in so
doing.
As referred to by appellants, Falk’ 967 does explain that
Table 10 shows that amphoteric fluorinated surfactant provided
less than satisfactory surface tension properties when combined
in the particularly tested formulations without a fluorinated
synergist. Falk ‘967 provides a solution to that problem. Add a
fluorinated synergist. As such, the limited testing provided by
Falk ‘967 can hardly be considered to constitute a teaching away
from the use of amphoteric fluorinated surfactants as urged by
appellants. Indeed, Falk ‘967 teaches that adding a fluorinated
synergist with the preferred anionic fluorinated surfactant is
also a predicate for achieving desirable low surface tensions.
See Table 9.
In reaching the conclusion that the herein claimed subject
matter is prima facie obvious over the teachings of the applied
references, we also note that the prior art references in
question need not provide all of appellants* reasons, such as an
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