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Patents Claim Construction Patent Invalidity

Jones Day

PTAB Allows Three Concurrent IPR Petitions for Unusual Patent Claims

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Recently, the Patent Trial and Appeal Board (“the Board”) was persuaded to consider the merits of three out of seven concurrent petitions for an inter partes review of a single patent due to the patent’s complicated claiming...more

McDonnell Boehnen Hulbert & Berghoff LLP

Sage Products, LLC v. Stewart (Fed. Cir. 2025)

When a prevailing challenger withdraws from an appeal in post-grant proceedings, the Director can intervene under 35 U.S.C. § 143, which is what happened in an appeal in Sage Products, LLC v. Stewart after Challenger Becton...more

Jones Day

Expert Testimony Supporting POPR Can Be An Effective Strategy

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It is relatively uncommon for parties to submit expert declarations in the preliminary-response phase of an IPR proceeding, but recently the Patent Owner in Imperative Care, Inc. v. Inari Medical, Inc. effectively used that...more

Alston & Bird

Intellectual Property Litigation Newsletter | April 2025

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Welcome to the Intellectual Property Litigation Newsletter, our review of decisions and trends in the intellectual property arena. In this edition, we learn that written description is required for a preamble, labor or...more

Sheppard Mullin Richter & Hampton LLP

2024 Federal Circuit Case Summaries - Intellectual Property: Year End Report

We are excited to present the second edition of Sheppard Mullin’s “Year in Review” report, which provides a comprehensive summary of the key precedential Federal Circuit decisions related to patent law in 2024. Building on...more

Baker Botts L.L.P.

First Quarter 2025 Federal Circuit Law Snapshot

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Since serving as a Federal Circuit clerk, Michael Hawes has monitored that court's precedential opinions and prepares a deeply outlined index by subject matter (invalidity, infringement, claim construction, etc.) of relevant...more

Fish & Richardson

EPRx 201: The Risks and Rewards of Ex Parte Reexamination

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Ex parte reexamination (EPRx) comes with risks and rewards for both patent challengers and patent owners. Patent challengers enjoy a lower threshold for institution and avoid the estoppel risk of other post-grant proceedings...more

McDermott Will & Emery

Construing Unambiguous Claim Language and Qualifying Challenged Expert as POSITA

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Addressing the issues of claim construction and the requisite expert qualifications to testify on obviousness and anticipation, the US Court of Appeals for the Federal Circuit vacated a Patent Trial & Appeal Board decision...more

Rothwell, Figg, Ernst & Manbeck, P.C.

Product-by-Process Analysis: Invalidity ≠ Infringement

On March 4, 2025, the Federal Circuit affirmed the Patent Trial and Appeal Board’s (“PTAB”) decision in Restem, LLC v. Jadi Cell, LLC, No. 23-2054, 2025 WL 679195, at *1 (Fed. Cir. Mar. 4, 2025), finding that the patent...more

Vorys, Sater, Seymour and Pease LLP

The Precedent: Federal Circuit Vacates Claim Construction But Upholds PTAB’s Determination of Obviousness and Motivation to...

In this edition of The Precedent, we outline the Federal Circuit's decision in HD Silicon Solutions LLC v. Microchip Technology Inc. In HD Silicon Solutions LLC, the Federal Circuit addressed an appeal from the USPTO Patent...more

McDermott Will & Emery

Validity Analysis for Product-by-Process Claim Focuses on Product

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The US Court of Appeals for the Federal Circuit affirmed a Patent Trial & Appeal Board patentability finding, explaining that an anticipation analysis for a product-by-process claim focuses on the product and not the process....more

BakerHostetler

A Later-Discovered Improvement to an Invention Cannot Be Used To Reach Back and Invalidate an Earlier-Filed Patent

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Novartis markets and sells a combination therapy of valsartan and sacubitril under the brand name Entresto® for the treatment of various forms of heart failure. MSN submitted an Abbreviated New Drug Application seeking...more

Baker Botts L.L.P.

The Impact of Prosecution Length on Invalidity Outcomes in Patent Litigation

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This Article analyzes over 89,000 patents litigated over a twenty-year period to determine how the number of office actions to allowance during prosecution impacts rates of invalidity during subsequent litigation. Many...more

WilmerHale

Federal Circuit Patent Watch: Federal Circuit Orders Remanded Case Reassigned to New Judge, Finding That Trial Judge’s Statements...

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Precedential and Key Federal Circuit Opinions - HD SILICON SOLUTIONS LLC v. MICROCHIP TECHNOLOGY INC. [OPINION] (2023-1397, 2/6/2025) (Lourie, Stoll, Cunningham) - Lourie, J. The Board affirmed the Final Written...more

Knobbe Martens

Federal Circuit Review | January 2025

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In Honeywell International Inc. v. 3G Licensing, S.A., Appeal No. 23-1354, the Federal Circuit held that under the obviousness standard of 35 U.S.C. § 103, the motivation to modify prior art does not need to be the same as...more

Robins Kaplan LLP

Exelixis, Inc. v. MSN Labs. Private Ltd.

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Cabometyx® (cabozantinib (L)-malate) - Case Name: Exelixis, Inc. v. MSN Labs. Private Ltd., No. 22-228-RGA, 2024 WL 4491176 (D. Del. Oct. 15, 2024) (Andrews, J.)  Drug Product and Patent(s)-in-Suit: Cabometyx®...more

Robins Kaplan LLP

Melinta Therapeutics, LLC v. Nexus Pharms., Inc.

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Minocin® (minocycline) - Case Name: Melinta Therapeutics, LLC v. Nexus Pharms., Inc., Civ. No. 21-2636, 2024 WL 4799896 (N.D. Ill. Nov. 15, 2024) (Kness, J.)  Drug Product and Patent(s)-in-Suit: Minocin® (minocycline);...more

Alston & Bird

Patent Case Summaries | Week Ending January 24, 2025

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Steuben Foods, Inc. v. Shibuya Hoppmann Corp., et al., No. 2023-1790 (Fed. Cir. (D. Del.) Jan. 24, 2024). Opinion by Moore, joined by Hughes and Cunningham. Steuben sued Shibuya for infringement of three patents relating to...more

Alston & Bird

Patent Case Summaries | Week Ending January 17, 2025

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Lynk Labs, Inc. v. Samsung Electronics Co., Ltd., No. 2023-2346 (Fed. Cir. (PTAB) Jan. 14, 2025). Opinion by Prost, joined by Lourie and Stark....more

McDermott Will & Emery

Complex or Not Written Description Is Evaluated Against Claims

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The US Court of Appeals for the Federal Circuit reversed a district court’s ruling of invalidity for lack of written description, finding that the district court erred in its analysis of written description because patents...more

Knobbe Martens

A Patent Must Describe What Is Claimed, Not What Infringes

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Before Lourie, Prost, and Reyna. Appeal from the U.S. District Court for the District of Delaware. Summary: A patent was not invalid for lack of written description for failing to describe the specific infringing embodiment...more

Lathrop GPM

Federal Circuit Upholds Validity of Entresto Patent In Precedential Decision Concerning Written Description and Enablement

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In a Jan. 10 precedential ruling by the United States Court of Appeals for the Federal Circuit, the validity of the U.S. patent covering Novartis’s blockbuster drug Entresto was upheld, reversing an earlier decision by the...more

Alston & Bird

Patent Case Summaries | Week Ending January 10, 2025

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Novartis Pharmaceuticals Corp. v. Torrent Pharma Inc., et al., Nos. 2023-2218, -2220, -2221 (Fed. Cir. (D. Del.) Jan. 10, 2025). Opinion by Lourie, joined by Prost and Reyna. The FDA approved a New Drug Application from...more

Knobbe Martens

Federal Circuit Review | December 2024

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Bound to Happen: Inherent Property Leaves No Question of Reasonable Expectation of Success - In Cytiva Bioprocess R&D Ab v. Jsr Corp., Appeal No. 23-2074, the Federal Circuit held that a claim limitation merely reciting an...more

WilmerHale

Federal Circuit Patent Watch: Deterrence Sanctions Affirmed for Bad Faith Filings of Meritless Lawsuits

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Precedential and Key Federal Circuit Opinions - 1. CYTIVA BIOPROCESS R&D AB v. JSR CORP. [OPINION] (2023-2074, 12/4/2024) (Prost, Taranto, Hughes) - Prost, J. The Court affirmed the PTAB’s IPR determination that...more

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