Appeal No. 1997-3816
Application No. 08/512,313
Brief. As a result of our review, we have determined that
none of the examiner’s rejections should be sustained. Our
rationale for arriving at this conclusion follows.
The test for obviousness is what the combined teachings
of the prior art would have suggested to one of ordinary skill
in the art. See, for example, In re Keller, 642 F.2d 413,
425, 208 USPQ 871, 881 (CCPA 1981). In establishing a prima
facie case of obviousness, it is incumbent upon the examiner
to provide a reason why one of ordinary skill in the art would
have been led to modify a prior art reference or to combine
reference teachings
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