Appeal No. 2000-0142 Page 19
Application No. 08/705,569
interferences, as alleged, there is no reason to add a shunt
capacitor across reference resistor R of De La Plaza et al
1
absent some recognition or indication in the latter reference
that a high-frequency interference problem is present at
resistor R .” (Appeal Br. at 17.)
1
“Obviousness is not to be determined on the basis of
purpose alone.” In re Graf, 343 F.2d 774, 777, 145 USPQ 197,
199 (CCPA 1965). It is sufficient that references suggest
doing what an appellant did, although the appellant's
particular purpose was different from that of the references.
In re Heck, 699 F.2d 1331, 1333, 216 USPQ 1038, 1040 (Fed.
Cir. 1983)(citing In re Gershon, 372 F.2d 535, 539, 152 USPQ
602, 605 (CCPA 1967)).
Here, De La Plaza discloses a “stabilized current
generator with single power supply.” Tit. More specifically,
the single power supply is “a positive power supply V .” Col.
DD
4, ll. 61-62. Although the reference shows several
embodiments, it also invites "variations . . . which can be
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