Appeal No. 1997-1301
Application No. 08/079,310
Furthermore, we find an inconsistency in the examiner’s
reasoning that one of ordinary skill in the art would have
been
motivated to substitute an electron withdrawing substituent at
the alpha carbon of the benzyl group to facilitate the
intramolecular rearrangement set forth in Scheme III of
Reichmanis. Scheme III as disclosed by Reichmanis shows the
generation of acid through the well known ortho-nitrobenzyl
photochemically induced rearrangement (see page 398). The
teachings of Houlihan at col. 4, ll. 8-58, are relied upon by
the examiner to show that increased steric hindrance and
electron withdrawing characteristics provide improved thermal
stability (Answer, page 5). Thus the examiner is proposing to
combine the teachings of two different effects, namely the
effect of substituents on photo-induced generation of acid and
the effect of substituents on the temperature at which the
acid generator decomposes during the post exposure baking (see
Houlihan, col. 4, ll. 14-24). Furthermore, all of these
effects are taught for substituents at the 6-position of the
benzyl ring and the examiner has not shown why these teachings
9
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007