Appeal No. 2003-0819
Application No. 09/872,928
may also be added. (Column 25, line 65 to column 26, line 6;
column 30, lines 10-27 and 55-67.)
Nesvadba teaches 3-arylbenzofuranone-type compounds within
the scope of the here recited formula (V) as stabilizers for
polymers such as crosslinkable acrylic resins and epoxy resins.
(Column 1, lines 3-8; column 1, line 19 to column 6, line 3;
column 24, line 26 to column 27, line 55.) According to
Nesvadba, the 3-arylbenzofuranone-type stabilizers may be used
together with other stabilizers, preferably an organic phosphite
or phosphonite compound, to provide excellent stabilizing
effects. (Column 33, lines 33-32; column 34, lines 10-12.) In
addition, Nesvadba teaches that the stabilizers may be
incorporated into the polymer in pure form to form compositions.
(Column 33, lines 49-51.)
Given these prior art teachings, we share the examiner’s
view (answer, page 4) that one of ordinary skill in the art
would have been led to use Nesvadba’s combination of 3-
arylbenzofuranone and organic phosphite or phosphonite in the
powder coating compositions of Ertl, Malik, or Valet, thus
arriving at a composition encompassed by appealed claim 14 or a
process encompassed by appealed claim 25, with the reasonable
expectation of achieving excellent stabilization against
thermal, oxidative, or light-induced degradation. As required
8
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