Appeal No. 95-1798
Application 07/397,415
where A, R and R are spelled out in the claim. On the1 2
contrary, DeBoer discloses a water-insoluble, substantially non-
wat e
r- sw
ell ab
le io
dinated polymer, useful as a contrast agent for radiography. We
see no cogent reason stemming from the prior art which would have
led a person having ordinary skill to modify DeBoer’s iodinated
polymer, per the teachings of Bertoni, to arrive at the water-
soluble product of claim 14. In fact, such modification would
have destroyed the very essence of the teachings in DeBoer.
In presenting their case before the Board, appellants
emphasize the different solubility characteristics between the
claimed polymers (water-soluble) and the polymers disclosed by
DeBoer (water-insoluble and non-water-swellable). Appellants
further emphasize the difference between the polymers of DeBoer
(water-insoluble and non-water-swellable) and the products of
Bertoni (water-soluble). See the main Brief before the Board,
-6-
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