Archive | Inter Partes Review

Broad Estoppel for IPR Petitioner Asserting Prior Art in District Court

Uncertainty over IPR estoppel continues. In Douglas Dynamics, LLC v. Meyer Products LLC, the Western District of Wisconsin recently ruled that grounds of invalidity left out of a petition for inter partes review are estopped and cannot be raised in district court—contrary to the rulings of other district courts. Civ. No. 14-cv-886-jdp (W.D. Wis. Apr. […]

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Patent Obviousness and Reasonable Expectation of Success

The Federal Circuit has (mostly) sustained the PTAB’s findings that claims of US Patent No. 7,433,483 are obvious over prior art, explaining that obviousness under 35 USC § 103 required, in essence, a showing that the proposed combination of references would result in an improvement, even if not the best possible improvement. Slot Speaker Technologies, […]

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PTAB Rejects Secondary Considerations for Patentability

Even though there was no dispute that a commercially successful product encompassed challenged patent claims, the USPTO’s Patent Trial and Appeal Board held that a patent owner failed to show secondary considerations of non-obviousness.  Arctic Cat, Inc. v. Polaris Industries, Inc., Case IPR2015-01781; Patent 8,827,028 B2 (PTAB Jan. 30 2017).  The Patent Owner, the PTAB […]

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PTAB Construes Patent Claim Terms as Subject to §112 ¶6 in IPR

The USPTO’s PTAB held that the term “drive module” was a means-plus-function limitation subject to 35 U.S.C. § 112, sixth paragraph (now 112(f))  in its decision to institute an Inter Partes Review (IPR) in Apple Inc., v. Immersion Corporation, IPR2016-01372 (January 11, 2017). The PTAB (Patent Trial and Appeal Board) raised the §112(6) issue sua […]

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Judge Robinson Revisits IPR Estoppel, Seeking Federal Circuit Clarification

A district court recently reaffirmed its ruling that statutory estoppel does not apply to grounds of invalidity that could have been included in a petition for an inter partes review but weren’t, clearing the way for the defendant to raise those grounds of invalidity against the patent at trial. Intellectual Ventures I LLC et al. […]

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Another Reason Why Ex Parte Reexaminations May Not Be the Best Way to Challenge Patent Claims

Despite the defendant’s diligence in seeking an ex parte re-examination of the patent-in-suit by the USPTO shortly after being sued, a district court has denied the defendant’s motion for a stay.  Pro-Troll, Inc., v. Shortbus Flashers, Inc., No. 16-cv-04062-VC (N.D. Cal. Dec. 23, 2016).   The court’s reasoning included in an interesting comparison of ex parte […]

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Broadest Reasonable Interpretation of Patent Claims Must Be Logically Consistent

Here is ammunition for patent applicants and patent owners alike when examiners, or challengers in Inter Partes Reviews, rely on broad readings of claim language that go beyond a broadest reasonable interpretation: D’Agostino v. Mastercard International. Inc., No. 2016-1592, 2016-1593 (Fed. Cir. Dec. 22, 2016.  In this case, the Federal Circuit vacated a claim construction […]

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Federal Circuit Says Ex-Patent Owners Can Bring Inter Partes Reviews

In Husky Injection Molding Systems Ltd., v. Athena Automation LTD., Nos. 2015-1726, 2015-1727 (Sept. 23, 2016), the Federal Circuit rejected Husky’s appeal of a PTAB inter partes review decision that certain challenged claims were invalid. Husky’s grounds for appeal were based not on the PTAB’s final decision finding anticipation of the claims, but on an […]

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