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In re Rosaen

477 F.2d 964, 177 U.S.P.Q. (BNA) 577, 1973 CCPA LEXIS 361
CourtCourt of Customs and Patent Appeals
DecidedMay 10, 1973
DocketPatent Appeal No. 8921
StatusPublished

This text of 477 F.2d 964 (In re Rosaen) is published on Counsel Stack Legal Research, covering Court of Customs and Patent Appeals primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In re Rosaen, 477 F.2d 964, 177 U.S.P.Q. (BNA) 577, 1973 CCPA LEXIS 361 (ccpa 1973).

Opinion

LANE, Judge.

This appeal is from the decision of the Patent Office Board of Appeals affirming the examiner’s rejection of claims 16-19 and 22-23 of appellants’ application,1 entitled “Fluid Cylinder,” as unpatentable under 35 U.S.C. § 103 in view of certain prior patents. We affirm.

The claimed subject matter relates to a multi-chambered fluid cylinder and piston device having four actuating chambers, two of which are pressurized to extend the device and two of which are pressurized to retract the device. Appellants state that the relationship between the cross-sectional areas of the various chambers as set forth in the claims provides an extension force up to about two times the retraction force. Appellants’ preferred embodiment is illustrated in Fig. 1 of the application drawings reproduced herein.

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Related

Conditions for patentability; non-obvious subject matter
35 U.S.C. § 103

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Bluebook (online)
477 F.2d 964, 177 U.S.P.Q. (BNA) 577, 1973 CCPA LEXIS 361, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-rosaen-ccpa-1973.