Appeal No. 95-4863
Application 07/865,993
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, 1577, 221 USPQ 929, 933 (Fed.
Cir. 1984). These showings by the examiner are an essential part
of complying with the burden of presenting a prima facie case of
obviousness. Note In re Oetiker, 977 F.2d 1443, 1445, 24 USPQ2d
1443, 1444 (Fed. Cir. 1992). If that burden is met, the burden
then shifts to the applicant to overcome the prima facie case
with argument and/or evidence. Obviousness is then determined on
the basis of the evidence as a whole and the relative
persuasiveness of the arguments. See Id.; In re Hedges, 783 F.2d
1038, 1039, 228 USPQ 685, 686 (Fed. Cir. 1986); In re Piasecki,
745 F.2d 1468, 1472, 223 USPQ 785, 788 (Fed. Cir. 1984); and In
re Rinehart, 531 F.2d 1048, 1052, 189 USPQ 143, 147 (CCPA 1976).
The primary references to Sonderegger and Lukasiewicz are
cited by the examiner as examples of conventional cylinder
pressure sensors. These references teach nothing about the
operating features of the piezoelectric element as recited in
claim 1. Each of the secondary references to Epstein, Bundy,
McElroy and Gürich teaches a piezoelectric element made from
5
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