Appeal No. 2000-0812 Page 7
Application No. 08/989,469
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). Furthermore, to reach a
conclusion of obviousness under § 103, the examiner must also
produce factual basis supported by teaching in a prior art
reference or shown to be common knowledge
of unquestionable demonstration, consistent with the holding
in Graham v. John Deere Co., 383 U.S. 1 (1966). Our reviewing
court requires this evidence in order to establish a prima
facie case. In re Piasecki, 745 F.2d 1468, 1471-72, 223 USPQ
785, 787-88 (Fed. Cir. 1984); In re Cofer, 354 F.2d 664, 668,
148 USPQ 268, 271-72 (CCPA 1966).
Turning to Vrancken, we find that the reference discloses
a process for reproducing images by exposure to
electromagnetic radiation of a recording material that
incorporates hydrophobic thermoplastic polymers in the form of
particles in heat-conducting relationship with a heat-
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