Appeal No. 95-1632
Application No. 07/991,658
to impermissible hindsight. Accordingly, we shall not sustain
the examiner’s rejection.
Effenberger, the primary reference, does not mention the
particular amorphous fluorinated copolymers recited in the
claims. Neither do Vassiliou or Boling for that matter.
According to appellant’s specification (p.2, line 23-page 3, line
4) these particular high molecular weight copolymers have
somewhat different properties from conventional
tetrafluoroethylene polymers and, because of these unusual
properties, their adhesion to substrate surfaces is problematic.
Furthermore, Effenberger is not concerned with the application of
a primer coating to enhance adhesion of a subsequently applied
coating to a substrate surface. In fact, it would appear that
the goal of Effenberger would be to minimize adhesion of a
fluoropolymer film to the surface of a carrier belt so that the
film can be subsequently stripped from the carrier. In this
regard, we refer to col. 4, lines 48-54, and col. 5, lines 16-19,
of the reference.
In order to overcome the quite substantial deficiencies of
the primary reference, the examiner has attempted to combine its
teachings with those of Vassiliou and Boling. While Vassiliou
does suggest the application of a primer coating to enhance
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