Appeal 2007-1436
Application 10/390,318
Id. at 1740, 82 USPQ2d at 1396. The operative question in this “functional
approach” is thus “whether the improvement is more than the predictable use of
prior art elements according to their established functions.” Id.
The Supreme Court stated that “[f]ollowing these principles may be more
difficult in other cases than it is here because the claimed subject matter may
involve more than the simple substitution of one known element for another or the
mere application of a known technique to a piece of prior art ready for the
improvement.” Id. The Court explained:
Often, it will be necessary for a court to look to
interrelated teachings of multiple patents; the effects of
demands known to the design community or present in
the marketplace; and the background knowledge
possessed by a person having ordinary skill in the art, all
in order to determine whether there was an apparent
reason to combine the known elements in the fashion
claimed by the patent at issue.
Id. at 1740-41, 82 USPQ2d at 1396. The Court noted that “[t]o facilitate review,
this analysis should be made explicit.” Id. (citing In re Kahn, 441 F.3d 977, 988,
78 USPQ2d 1329, 1336 (Fed. Cir. 2006) (“[R]ejections on obviousness grounds
cannot be sustained by mere conclusory statements; instead, there must be some
articulated reasoning with some rational underpinning to support the legal
conclusion of obviousness”)). However, “the analysis need not seek out precise
teachings directed to the specific subject matter of the challenged claim, for a court
can take account of the inferences and creative steps that a person of ordinary skill
in the art would employ.” Id.
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