Appeal No. 1998-2956
Application No. 08/709,964
In rejecting claims under 35 U.S.C. § 103, the examiner bears the initial burden of
presenting a prima facie case of obviousness. See In re Rijckaert, 9 F.3d 1531, 1532,
28 USPQ2d 1955, 1956 (Fed. Cir. 1993). A prima facie case of obviousness is
established by presenting evidence that the reference teachings would appear to be
sufficient for one of ordinary skill in the relevant art having the references before him to
make the proposed combination or other modification. See In re Lintner, 458 F.2d 1013,
1016, 173 USPQ 560, 562 (CCPA 1972). Furthermore, the conclusion that the claimed
subject matter is prima facie obvious must be supported by evidence, as shown by some
objective teaching in the prior art or by knowledge generally available to one of ordinary
skill in the art that would have led that individual to combine the relevant teachings of the
references to arrive at the claimed invention. See In re Fine, 837 F.2d 1071, 1074, 5
USPQ2d 1596, 1598 (Fed. Cir. 1988). Rejections based on
§ 103 must rest on a factual basis with these facts being interpreted without hindsight
reconstruction of the invention from the prior art. The examiner may not, because of doubt
that the invention is patentable, resort to speculation, unfounded assumption or hindsight
reconstruction to supply deficiencies in the factual basis for the rejection. See In re
Warner, 379 F.2d 1011, 1017, 154 USPQ 173, 178 (CCPA 1967), cert. denied, 389
U.S. 1057 (1968). Our reviewing court has repeatedly cautioned against employing
hindsight by using the appellants’ disclosure as a blueprint to reconstruct the claimed
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