Appeal No. 97-2053
Application 08/229,624
ordinary skill in the art the obviousness of the invention as
set forth in claims 1, 15 and 17. Accordingly, we reverse.
In rejecting claims under 35 U.S.C. § 103, it is
incumbent upon the examiner to establish a factual basis to
support the legal conclusion of obviousness. See In re Fine,
837 F.2d 1071, 1073, 5 USPQ2d 1596, 1598 (Fed. Cir. 1988).
In so doing, the examiner is expected to make the factual
determinations set forth in Graham v. John Deere Co., 383 U.S.
1, 17, 148 USPQ 459, 467 (1966), and to provide a reason why
one having ordinary skill in the pertinent art would have been
led to modify the prior art or to combine prior art references
to arrive at the claimed invention. Such reason must stem
from some teaching, suggestion or implication in the prior art
as a whole or knowledge generally available to one having
ordinary skill in the art. Uniroyal Inc. v. Rudkin-Wiley
Corp., 837 F.2d 1044, 1051, 5 USPQ2d 1434, 1438 (Fed. Cir.),
cert. denied, 488 U.S. 825 (1988); Ashland Oil, Inc. v. Delta
Resins & Refractories, Inc., 776 F.2d 281, 293, 227 USPQ 657,
664 (Fed. Cir. 1985), cert. denied, 475 U.S. 1017 (1986); ACS
Hospital Systems, Inc. v. Montefiore Hospital, 732 F.2d 1572,
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