News & Analysis as of

Prior Art Patent Invalidity Patent Litigation

Goodwin

Issue 45: PTAB Trial Tracker

Goodwin on

In Pfizer Inc., v. Sanofi Pasteur Inc., SK Chems Co. Ltd., v. Vidal, 2019-1871 (March 5, 2024), the Federal Circuit affirmed the Board’s conclusions that claims 1–45 of U.S. Patent No. 9,492,559 were unpatentable due to...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - August 2024

Sanho Corp. v. Kaijet Technology International Limited Inc., Appeal No. 2023-1336 (Fed. Cir. July 31, 2024) In our Case of the Week, the Federal Circuit held that the private but non-confidential sale of thousands of...more

Erise IP

Eye on IPRs, June 2024: What’s Next for the Design Patent Obviousness Test; Federal Circuit Ruling on Printed Matter

Erise IP on

Every month, Erise’s patent attorneys review the latest inter partes review cases and news to bring you the stories that you should know about: Design Patent Obviousness Test Thrown Out - The U.S. Court of Appeals...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - April 2024 #2

Janssen Pharms., Inc. et al. v. Teva Pharm. USA, Inc. et al., Appeal Nos. 2022-1258, -1307 (Fed. Cir. April 1, 2024) In this week’s Case of the Week, the Federal Circuit vacated-in-part a district court’s bench trial...more

Goodwin

Issue 44: PTAB Trial Tracker

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The availability of post-grant proceedings at the Patent Trial and Appeal Board (PTAB) has changed the face of patent litigation. This periodic digest is designed to keep you up-to-date by highlighting interesting PTAB,...more

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

2023 PTAB Year in Review: Analysis & Trends: The Changing Contours of IPR Estoppel Law

As any PTAB practitioner knows, the possibility of being estopped from asserting prior art in district court is a significant risk that must be considered when filing an IPR. Section 315(e)(2) prevents a petitioner, following...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

Goodwin

PTAB Issues Final Written Decisions Finding Claims of Aflibercept-related Patents Invalid

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On January 9, 2024, the PTAB issued final written decisions in IPR2022-01225 and IPR2022-01226, filed by Mylan on two Regeneron patents directed to dosing of aflibercept — U.S. Patent Nos. 10,130,681 and 10,888,601. The PTAB...more

Fish & Richardson

2023 Post-Grant Annual Report

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2023 was a busy year at the Patent Trial and Appeal Board, as post-grant practice continued to evolve at a rapid pace. At the United States Patent and Trademark Office, there were big developments in Director Review and...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - December 2023

Penumbra, Inc. v. Rapidpulse, Inc., IPR2021-01466, Paper 34 (P.T.A.B. March 10, 2023) In a PTAB decision that was recently designated precedential, the Board made two important decisions concerning provisional patent...more

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

[Webinar] Developments in IPR Estoppel - December 5th, 1:00 pm - 2:00 pm EST

Director Jason A. Fitzsimmons and Counsel Richard A. Crudo will present the “Developments in IPR Estoppel” webinar on Tuesday, December 5, 2023, at 1:00 PM ET. The possibility of being estopped from asserting prior art in...more

Jones Day

PTAB Doubles Down on Interference Estoppel Issue

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The Patent Trial and Appeal Board held all challenged claims of IGT’s patent unpatentable as obvious over two prior art patents. Zynga Inc. v. IGT, IPR2022-00199-32. In doing so, the PTAB further held that, contrary to...more

WilmerHale

Federal Circuit Patent Watch: “The” Computer Means the Same Computer

WilmerHale on

Precedential and Key Federal Circuit Opinions - 1. FINJAN LLC V. SONICWALL, INC [OPINION] (22-1048, 10/13/2023) (Reyna, Bryson, and Cunningham) - Cunningham, J. The Court vacated the district court’s judgment of...more

McDermott Will & Emery

Holy Pulmonary Hypertension, Batman: Method of Treatment Not Constrained by Safety and Efficacy

The US Court of Appeals for the Federal Circuit affirmed a district court’s holding that the asserted method of treatment patent was valid and infringed because safety and efficacy are not patent concerns. The Federal Circuit...more

AEON Law

Patent Poetry: The “Skilled Searcher” and IPR Estoppel

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The Federal Circuit has issued an opinion on the burden of proof for establishing estoppel in a case involving an inter partes review (IPR) petition. The case is Ironburg Inventions Ltd. v. Valve Corp....more

WilmerHale

Federal Circuit Patent Watch: Patent owner assumes temporary burden of production when attempting to antedate prior art

WilmerHale on

Precedential Federal Circuit Opinions - BLUE GENTIAN, LLC v. TRISTAR PRODUCTS, INC. (21-2316, 6/9/23) (Prost, Chen, and Stark) - Prost, J. The Court affirmed the district court’s decision finding that a nonparty...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - June 2023 #2

In re: John L. Couvaras, Appeal No. 2022-1489 (Fed. Cir. June 14, 2023) In our Case of the Week, the Court of Appeals for the Federal Circuit affirmed a Patent Trial and Appeals Board decision that a patent application’s...more

Goodwin

Issue 41: PTAB Trial Tracker

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Derivation Showing Overcome by Evidence of Respondent’s Prior Conception in Rare Derivation Proceeding - The Board issued a decision in a rare derivation proceeding filed by Global Health Solutions LLC (“Petitioner”)...more

Bradley Arant Boult Cummings LLP

Searching for Claim Support in a Patent Specification? You Better Blaze a Trail

Last month the Federal Circuit affirmed a PTAB inter partes review (IPR) decision finding that the University of Minnesota’s patent claim directed to the anti-cancer drug sofosbuvir was not adequately supported by the written...more

Fish & Richardson

Texas Patent Litigation Monthly Wrap-Up: March 2023

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March's Texas Patent Litigation Monthly Wrap-Up covers decisions addressing post-verdict JMOL, the point at which cases become exceptional, and the standard for amending invalidity contentions, among other issues....more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Addresses Burden of Proof for IPR Estoppel

On April 3, in Ironburg Inventions Ltd. v. Valve Corp., the Federal Circuit articulated a standard for applying inter partes review (IPR) estoppel on grounds a petitioner “reasonably could have raised” under 35 U.S.C. §...more

Knobbe Martens

Who Bears the Burden of Proof for IPR Estoppel?

Knobbe Martens on

IRONBURG INVENTIONS LTD. v. VALVE CORP. Before Lourie, Clevenger, and Stark.  Appeal from the United States District Court for the Western District of Washington. Summary: The patentee has the burden of proving that...more

Irwin IP LLP

CAFC Holds Priority Favors True Trailblazers, Not Maze-Like Paths Through a Forest of Prior Applications: Regents of the...

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The Court of Appeals for the Federal Circuit (“CAFC”) recently upheld a decision of the Patent Trial and Appeal Board (“PTAB”) that found some claims of U.S. Patent 8,815,830 (“the ’830 patent”) unpatentable as anticipated....more

A&O Shearman

PTAB Decision Invalidating Claims Finding Lack of Written Description and Later Priority Date Upheld by Federal Circuit

A&O Shearman on

Procedural History - Regents of the University of Minnesota v. Gilead Sciences, Inc., Case No. 2021-2168 (Fed. Cir. Mar. 6, 2023) is an appeal by the Regents of the University of Minnesota (“Minnesota”) from a final...more

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

2022 Design Patents Year in Review: Analysis & Trends

Last year, in our inaugural issue of “The Year in Review,” we reported that since the landmark jury verdict in the IP litigation between Apple and Samsung in 2012, which awarded more than $1B to Apple for infringement of...more

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