prosecution disclaimer : CAFC Alert

Statements made in IPR proceeding can be relied on to support a finding of prosecution disclaimer during claim construction

Shan Gong | July 5, 2017

Aylus Networks, Inc., v. Apple Inc.

May 11, 2017

Before Moore, Linn, and Stoll.  Opinion by Stoll.

Summary

Patent owner Aylus Networks, Inc. sued Apple Inc. in district court for infringement of the U.S. Patent No. RE 44,412 (“the ‘412 patent”). Apple filed two separate IPRs challenging validity of all the claims. PTAB denied to institute claim 2 based on Aylus’s explanation of a limitation to claim 2. During claim construction in district court, this same explanation is relied on to support a finding of prosecution disclaimer. CAFC affirmed the district court’s finding of prosecution history disclaimer. CAFC also stated that prosecution disclaimer applies whether a statement is made before or after instituting an IPR.


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Clear and Unmistakeable Evidence of a Disclaimer Found in Response to Enablement Rejection

Kumiko Ide | April 24, 2013

Biogen Idec, Inc., et al. v. GlaxoSmithKline LLC, et al.

April 16, 2013

Panel: Dyk, Plager, Reyna.  Opinion by Reyna.  Dissent by Plager.

Summary

During prosecution of the patent, applicants responded to the examiner’s enablement rejection, wherein they failed to challenge the examiner’s understanding of the crucial terms, and limited their invention to what the examiner believed their specification enabled.  The CAFC affirmed the district court’s narrow claim interpretation of the term “anti-CD20 antibody” based on prosecution history disclaimer.

実施可能要件を満たしていないとして発せられた拒絶通知に対して、出願人は、審査官の理解に対して反論することなく、明細書により実施可能であると審査官が判断したものに発明を限定するような主張を行った。よって、「anti-CD20 antibody」という用語について、狭いクレーム解釈を容認した地裁の判断は誤りでなかったとCAFCは判示した。


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Divided Claim Construction Leads to Reversal of Jury Verdict Against Alleged Infringer

Cindy Chen | April 17, 2013

Saffran v. Johnson & Johnson

April 4, 2013

Panel: Lourie, Moore, and O’Malley.  Opinion by Lourie. Concurrence Opinions by Moore and O’Malley.

Summary

The Federal Circuit reversed a $482 million jury verdict against Cordis, a member of the Johnson & Johnson family. The reversal came as a result of the Federal Circuit’s significant narrowing of the district court’s construction of two key claim limitations. One claim term was narrowed because the Federal Circuit found that the patentee’s arguments made during prosecution of the asserted patent, for the purpose of distinguishing over cited prior art, amounted to prosecution disclaimer. Meanwhile, a structure identified in the specification by the patentee as the corresponding structure to a means-plus-function limitation was disregarded as such, because the specification failed to link the identified structure to the recited function with sufficient specificity.


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