Appeal 2007-0888
Application 10/083,588
skill in this art to utilize the thermoplastic polymers comprising poly-p-
xylene as a protective layer in the wire bonding capillary of Gilding
(Answer 4).
The Appellant argues that the Examiner’s conclusion of obviousness
is incorrect as the present invention is not utilizing parylene coatings for
wear resistance and corrosion resistance properties described by Evans, and
therefore, is not solving the same problem as the presently claimed invention
(Br. 8). Appellant further argues that since the parylene composition is worn
away from the surface and results in a residual parylene composition that
inhibits corrosion, the resulting invention would not achieve the object of the
present invention to inhibit the buildup of contaminant deposits on the
surface of the wire bonding capillary (Br. 9).
Issue
Would one with ordinary skill in this art have reasonably expected
success in combining the teachings of Gilding and Evans in the manner
proposed by the Examiner?
Findings of Fact
Appellant invented a method of preparing a wire bonding capillary for
pressing a metal wire against an electrode pad (Specification 1). The wire
bonding capillary has at least a part of the pressing face of the capillary tip
coated with a layer of polymeric material, said polymeric material includes
at least one thermoplastic polymer such as parylene (Specification 6: 23-25).
Gilding describes coatings for microstructural capillary type bonding
tools (col. 2, ll. 57-59). Gilding further describes the application of a
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Last modified: September 9, 2013