Appeal No. 2001-2465
Application No. 09/167,878
composition of the type here claimed in view of Maslanka’s teaching
of a cationic water soluble prepolymer. However, we perceive no
basis in the applied references for so combining the teachings
thereof. By way of explanation, the cationic prepolymer of
Maslanka is not used by patentee as an ingredient, per se, in an
ink composition. Instead, this prepolymer is used as a reactant in
forming the graft copolymer particles of Maslanka which are used as
organic pigments and particularly as paper fillers (e.g., see lines
3-12 in column 2). Furthermore, these graft copolymer particles
are explicitly disclosed as being water insoluble (e.g., see lines
13-16 in column 4 and line 1 of patent claim 1).
In light of the foregoing, it is apparent that Maslanka would
not have suggested providing Kappele’s ink-jet printing ink
composition with a cationic water-soluble resin composition of the
type here claimed as the Examiner seems to believe. Arguably, an
artisan would have derived from Maslanka a teaching and suggestion
to use Maslanka’s cationic prepolymers to produce patentee’s graft
copolymer particles for use as organic pigments in the ink
compositions of Kappele. However, the resulting composition would
not correspond to the composition defined by appealed independent
claim 1. This is because the graft copolymer particles would not
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