Appeal No. 2006-3155
Application 09/682,749
7) MacGregor discloses the use of ultraviolet light absorbers,
including triazine (col. 6, l. 29), to improve the polycarbonate light
stability. Col. 6, ll. 21-23
8) MacGregor also discloses incorporating a hindered amine light
stabilizer (HALS) in a cycloaliphatic polyester layer on the
polycarbonate surface to increase weatherability of the structure. Col. 6,
ll. 34-36.
9) Light stabilizers may be incorporated in PCCD, for example, in an
amount of .05 to about 10 weight percent. MacGregor, col. 6, ll. 50-51.
10) Susi discloses a method of stabilizing polymer film coatings or
molded articles against light by incorporating a synergistic mixture of
tris-aryl-s-triazine UV absorber and HALS compound into a polymer
binder (Abstract) such as polyester. Col. 4, ll. 48-57.
ANALYSIS AND CONCLUSIONS
Appellants argue that the Examiner failed to make a prima facie
showing of obviousness because: (1) “MacGregor does not disclose an
upper layer that consists essentially of a cycloaliphatic polyester and the UV
stabilizers as recited in the claim” and (2) “there is no disclosure of an
intermediate layer within the scope of the invention.” Br. 4.
We disagree. The Examiner found that MacGregor’s multilayer
structure includes a substrate layer and an upper layer which may be a
cycloaliphatic polyester. Answer 3; FF 1. As pointed out by the Examiner,
a decorative intermediate layer may be located between the substrate and
surface layer (Answer 3) and may be made of same material as the substrate
(Answer 4). FF 2. MacGregor explicitly discloses that the substrate may be
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