Appeal No. 1997-3175
Application 08/521,545
units must be present in such a quantity as not to modify the
characteristics of the mordants, and states that acceptable
quantities are, for example, up to 20 wt% (col. 7, lines 45-
50). The repeating units in the Breton Jeffamine polymers®
relied upon by the examiner (answer, page 5) are of sufficient
quantity that the backbone has a molecular weight of at
least 600 (col. 4, lines 56-63). The portion of Farooq’s
disclosed mordants which correspond to appellant’s “R” group
have molecular weights of no more than about 413. A mordant2
formed by using one of Farooq’s N-heterocycles or
N,N-dimethylaminoethyl methacrylate moieties to link the
portion of Farooq’s mordants which correspond to appellant’s
“R” group with one of Breton’s polymers, therefore, would not
fall within the exemplified acceptable copolymer unit
quantities disclosed by Delfino, and the examiner has not
explained why one of ordinary skill in the art, nevertheless,
would have considered such a combination to be suitable.
Thus, even if Delfino is interpreted as indicating that any
copolymer which meets the proviso would be suitable as a
When X = C F SO .2
4 9 3
6
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