Appeal No. 2000-2149 16
Application No. 08/859,901
would have reasonably expected the copolymer of ethylene glycol and propylene glycol to
act as an effective solvent. The prima facie case of obviousness arises from the reasonable
expectation that compounds that are similar in chemical structure will exhibit similar
properties. In re Hoch, 428 F.2d 1341, 1343-44, 166 USPQ 406, 409 (CCPA 1970).
Based on the foregoing, I would also affirm the examiner’s rejections of claim 32
under 35 U.S.C. § 103.
)
) BOARD OF PATENT
EDWARD C. KIMLIN ) APPEALS AND
Administrative Patent Judge ) INTERFERENCES
)
PL/ECK:hh
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