News & Analysis as of

Patent Ownership Patent Infringement Prior Art

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Year in Review – Caveat Experimenter: Using Experimental Data in PTAB Proceedings Comes With Risks

Parties involved in Patent Trial and Appeal Board (PTAB) proceedings sometimes contemplate submitting experimental data to support their positions. Although such data can be useful, there also are risks. Several recent cases...more

Jones Day

Director Provides Reminders For Obviousness Analysis

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On July 9, 2024, Director Vidal reversed and remanded a denial of institution of inter partes review (IPR) relating to three Spin Master patents. See Prime Time Toys LLC v. Spin Master, Inc., IPR Nos. 2023-01339, 2023-01348,...more

Jones Day

Shifting Burden Dooms Patent Owner

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In a Final Written Decision, the PTAB declared claims of a patent unpatentable after finding the patent was not entitled to the earlier priority date of the anticipatory reference in Platinum Optics Technology, Inc. v. Viavi...more

Knobbe Martens

Federal Circuit Review | May 2024

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Infringement Judgement is Only Final when there’s Nothing Left to Do but Execute - In Packet Intelligence LLC v. Netscout Systems, Inc., Appeal No. 22-2064, the Federal Circuit held that an infringement judgment is only...more

Jones Day

Institution Denied For Lack of Sufficient Structure

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The Board declined to institute inter partes review because Petitioner failed to identify adequate corresponding structure in the challenged patent that performed the function of claim limitation that was to be construed...more

Jones Day

Institution Denial Vacated to Reconsider Prior Art Drawing

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On April 5, 2024, Director Vidal vacated and remanded the Patent Trial and Appeal Board’s (PTAB’s) denial of institution of inter partes review (IPR) where the Petitioner relied on a drawing in a prior art patent document to...more

Akin Gump Strauss Hauer & Feld LLP

District Court Precludes Experienced Patent Attorney from Testifying as Expert Based on Lack of Pertinent Technical Expertise

A district court recently precluded a patent attorney from testifying as an expert in a patent infringement lawsuit where the proposed expert lacked the requisite technical expertise to assist the trier of fact in...more

Jones Day

Claim Construction Dispositive In Patentability Determination

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It goes without saying that claim construction is an important issue, but the PTAB’s recent decision in Netflix, Inc. v. DIVX, LLC, IPR2020-00558, Paper 66 (PTAB Feb. 22, 2024), shows not only that reasonable minds can differ...more

Sheppard Mullin Richter & Hampton LLP

Federal Circuit Rules on Inventor-as-Lexicographer Definitions and the Proper Scope of Reply and Sur-Reply Briefing Following...

ParkerVision, Inc., v. Katherin K. Vidal, Under Secretary of Commerce for IP and USPTO Director No. 2022-1548, (Fed. Cir. December 15, 2023) primarily involved three topics: (1) the type of language in a patent specification...more

Jones Day

Patent Appendix That Was Referenced, But Not Incorporated, Is Not Prior Art

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In Apple Inc. v. DoDots Licensing Sols. LLC, IPR2023-00939, Paper 12 (PTAB Jan. 3, 2024) (“Decision”), the PTAB clarified what is and what is not part of the prior art, and as such what can be considered by the PTAB in an IPR...more

Jones Day

Reverse Engineered Search Insufficient For IPR/PGR Estoppel

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In GeigTech East Bay v. Lutron Electronics, patent owner GeigTech argued that Lutron should be estopped under 35 U.S.C. § 325(e)(2) from asserting two prior art grounds that it said Lutron could have reasonably raised in its...more

Jones Day

Conception and Reduction to Practice Dates Matter

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In a recent decision, the Patent Trial and Appeals Board found that the disputed claims regarding transferring digital content were not unpatentable under 35 U.S.C. § 103(a) after determining that the prior art cited by the...more

Jones Day

Proceed With Caution When Using Wayback Machine® Prior Art

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Just because a document is archived on the Internet Archive’s Wayback Machine® does not necessarily qualify it as prior art for an IPR challenge. ...more

Jones Day

Failure to Prove “Prior” Art Results in Denial

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The PTAB recently denied IPR institution in Sophos v. Open Text because the petitioner failed to show a reasonable likelihood that the asserted reference was, in fact, prior art.  IPR2023-00732, Paper 23 (November 2, 2023)....more

Akin Gump Strauss Hauer & Feld LLP

District Court Dismissed Claim Directed to Natural Speech Processing in a Vehicle-Mounted System as Patent Ineligible

The Eastern District of Virginia recently dismissed a patent infringement claim, holding that the asserted claim directed to natural speech processing is patent ineligible under 35 U.S.C. § 101, because it fails the Alice...more

Jones Day

Patent Owner Unable to Change Inventorship During Remand

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At the Inter Partes review trial, Patent Owner attempted to swear behind Petitioner’s primary prior art reference by showing that the inventors of the asserted patents had conceived of the invention before the priority date...more

Jones Day

Common Inventorship And Technology Insufficient For 325(d) Denial

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The PTAB recently declined to apply Section 325(d) and instituted inter partes review after a patent owner unsuccessfully argued that the petition relied on substantially the same prior art as that which the Office had...more

Knobbe Martens

Unraveling Hose Inventorship – From Idea to Contribution

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BLUE GENTIAN, LLC v. TRISTAR PRODUCTS, INC - Before Prost, Chen, and Stark. Appeal from the United States District Court for the District of New Jersey. - Summary: Alleged joint inventor contributed significantly to...more

Knobbe Martens

Analogous Art Must Be Compared to the Challenged Patent

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In Sanofi-Aventis Deutschland GmbH v. Mylan Pharm. Inc., Case No. 2021-1981, the Federal Circuit reversed an obviousness determination by the PTAB. At issue was Sanofi’s reissued U.S. Patent No. RE47,614 (the ’614 patent),...more

Sheppard Mullin Richter & Hampton LLP

Ironburg Inventions Ltd. v. Valve Corp. 21-2296 (Fed. Cir. Apr. 3, 2023)

This case addresses the “skilled and diligent searcher” standard used for establishing Inter Partes Review (“IPR”) estoppel (or lack thereof). In particular, this case establishes: (1) which party bears the burden of proof...more

Snell & Wilmer

Federal Circuit Holds Patent Owners Bear IPR Estoppel Burden of Proof

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The Federal Circuit recently held, for the first time, that patent owners bear the burden of proof for an Inter Partes Review (“IPR”) Estoppel affirmative defense that an alleged infringer failed to include prior art in a...more

McDonnell Boehnen Hulbert & Berghoff LLP

Horizon Medicines LLC v. Alkem Laboratories Ltd. (Fed. Cir. 2021)

Joint inventorship has been called "one of the muddiest concepts in the muddy metaphysics of patent law" because the "exact parameters of what constitutes joint inventorship are quite difficult to define." Mueller Brass Co....more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Strategies and Insights - May 2019: Board Immediately Distinguishes Precedential NHK Decision in Amazon Institution Decision

Just after making the NHK and Valve Corp decisions precedential, the Board distinguished them in Amazon. While NHK and Valve Corp resulted in denial, in Amazon the Board instituted trial despite Amazon having similar issues...more

Sterne, Kessler, Goldstein & Fox P.L.L.C.

PTAB Strategies and Insights - May 2019: Court's Infringement Indefiniteness Does Not Dictate Validity Indefiniteness at PTAB

In IPR2018-00272, the Board denied a motion to terminate brought by a Patent Owner who argued that a district court’s finding of indefiniteness required termination of the PTAB proceedings for U.S. Patent. 9,393,208....more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - September 2018 #4

PATENT CASE OF THE WEEK - Power Integrations, Inc. v. Fairchild Semiconductor Int’l, Inc., Appeal Nos. 2016-2691, 2017-1875 (Fed. Cir. Sept. 20, 2018) In a reissued, slightly altered version of a July 3, 2018 decision,...more

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