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Patent Infringement Written Descriptions

Bradley Arant Boult Cummings LLP

The Federal Circuit Calls for a Replay Allowing Sonos Another Opportunity at Google

The Federal Circuit’s recent decision in Google LLC v. Sonos, Inc. (24-1097) offers a compelling look at the evolving doctrine of prosecution laches, the written description requirement, and the practical realities of patent...more

McDermott Will & Schulte

Specification controls: Written description must be clear

The US Court of Appeals for the Federal Circuit reversed a district court’s decision upholding patent validity, finding that the subject patent’s specification clearly established that the written description failed to...more

Alston & Bird

Patent Case Summaries | Week Ending August 8, 2025

Alston & Bird on

Mondis Technology Ltd., et al. v. LG Electronics Inc., et al., Nos. 2023-2117, -2116 (Fed. Cir. (D.N.J.) Aug. 8, 2025). Opinion by Hughes, joined by Taranto and Clevenger....more

Knobbe Martens

An Examiner’s Allowance Does Not Create an “Especially Weighty” Presumption of Written-Description Support

Knobbe Martens on

MONDIS TECHNOLOGY LTD., HITACHI MAXELL, LTD., NKA MAXELL HOLDINGS, LTD., MAXELL, LTD.  v.  LG ELECTRONICS INC., LG ELECTRONICS USA, INC. - Before Taranto, Clevenger, and Hughes.  Appeal from the United States District Court...more

Morgan Lewis

Federal Circuit Applies Prosecution History Estoppel Based on Claim Cancellation

Morgan Lewis on

The US Court of Appeals for the Federal Circuit recently held that cancellation of a claim during prosecution may give rise to prosecution history estoppel, precluding the patentee from recapturing the surrendered subject...more

Robins Kaplan LLP

Astellas Pharma Inc. v. Zydus, Inc. II

Robins Kaplan LLP on

Nature of the Case and Issue(s) Presented: Astellas sued Lupin and Zydus based on the generics manufacturers’ ANDA filing and their efforts to make and sell generic mirabegron. In the leadup to the 2023 bench trial, the...more

McDermott Will & Schulte

“Payment Handler”: A Nonce Term Without Instructions

The US Court of Appeals for the Federal Circuit affirmed a district court’s ruling that a software term was a “nonce” term that invoked 35 U.S.C. § 112, sixth paragraph (i.e., a means-plus-function claim element). The Court...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: In re: Xencor, Inc.

In re: Xencor, Inc., Appeal No. 2024-1870 (Fed. Cir. Mar. 13, 2025) Our case of the week is an appeal from a decision of the Appeals Review Panel of the Patent Trial and Appeal Board, concerning Xencor’s patent application...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Written Description and Enablement Depend on What a Patent 'Claims,' Not What the Claims Cover

The Federal Circuit recently reversed a district court decision that found a patent that did not describe after-arising technology failed to satisfy the written description requirement. In so doing, the Federal Circuit...more

McDermott Will & Schulte

Eye-Catching: Biosimilars Injunction Prevails

Addressing a preliminary injunction in patent litigation related to the Biologics Price Competition and Innovation Act (BPCIA), the US Court of Appeals for the Federal Circuit upheld the district court’s grant of a...more

Goodwin

Federal Circuit Affirms Injunction Against Samsung and Formycon in Aflibercept BPCIA Litigation

Goodwin on

On January 29, 2025, the U.S. Court of Appeals for the Federal Circuit affirmed the District Court for the Northern District of West Virginia’s entries of preliminary injunction preventing Samsung Bioepis Co., Ltd....more

Knobbe Martens

A Patent Must Describe What Is Claimed, Not What Infringes

Knobbe Martens on

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

Alston & Bird

Patent Case Summaries | Week Ending January 10, 2025

Alston & Bird on

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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - January 2025 #2

In re Entresto (Sacubitril/Valsartan), Appeal Nos. 2023-2218, -2220, -2221 (Fed. Cir. Jan. 10, 2025) In our Case of the Week, the Federal Circuit revived Novartis’s US Patent No. 8,101,659 by reversing the district...more

Baker Botts L.L.P.

Third Quarter 2024 Federal Circuit Law Update

Baker Botts L.L.P. on

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

McDonnell Boehnen Hulbert & Berghoff LLP

PureCircle USA Inc. v. SweeGen, Inc. (Fed. Cir. 2024)

Not surprisingly, the Federal Circuit visited upon Plaintiff/Appellant PureCircle two of the Four Horsemen of the Biotech Patent Apocalypse* in a decision affirming the District Court's invalidation of the claims asserted...more

Jones Day

Institution Denied Based On Written Description in “Alternative Embodiments”

Jones Day on

On September 21, 2023, the PTAB denied United Services Automobile Association’s petition to institute inter partes review of Auto Telematics’s U.S. Patent No. 9,633,487.  IPR2023-00519, Paper 10....more

Venable LLP

[Ongoing Program] Life Sciences Series - Current Trends in ANDA Litigation - October 31st, 1:00 pm - 2:00 pm ET

Venable LLP on

We are excited to announce Venable’s inaugural Life Sciences Webinar Series. This month-long series will explore the intricacies and latest developments that shape the life sciences industry. Join us as we hear from our...more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Will Not Read Safety and Efficacy Limitations into Pharma Method Claims

On July 24, in United Therapeutics Corporation v. Liquidia Technologies, Inc., the Federal Circuit addressed whether safety and efficacy are required for pharmaceutical method claims to be sufficiently enabled and supported...more

McDermott Will & Schulte

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

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - July 2023 #4

United Therapeutics Corporation v. Liquidia Technologies, Inc., Appeal Nos. 2022-2217, 2023-1021 (Fed. Cir. July 24, 2023) In the Federal Circuit’s only precedential patent case this week, the Court considered questions...more

Akin Gump Strauss Hauer & Feld LLP

Federal Circuit: Prior Art Disclosure with Same Specificity as Patent Inherently Anticipates Claims

In a recent appeal from the PTAB, the Federal Circuit held that claims of a patent were inherently anticipated where the patent and prior art incorporated the same reference to describe a process for making the claimed...more

American Conference Institute (ACI)

[Event] 16th Annual Forum on Pharma & Biotech Patent Litigation in Europe - May 23rd - 24th, Amsterdam, Netherlands

Hosted by C5, the 16th Annual Forum on Pharma & Biotech Patent Litigation in Europe returns 23-24 May, at the DoubleTree by Hilton Amsterdam Central Station, Amsterdam with curated programing for you to gain the knowledge and...more

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2022 Decisions

As part of the recovery from the global COVID-19 pandemic, the U.S. Court of Appeals for the Federal Circuit took steps to return to normal operations. It began requiring live oral arguments in August 2022 and, by November,...more

Haug Partners LLP

Federal Circuit Rehearing Panel Vacates its January Decision and Reverses District Court Finding of Sufficient Written Description...

Haug Partners LLP on

On June 21, 2022, the Court of Appeals for the Federal Circuit (“CAFC”), in Novartis Pharmaceuticals Corp. v. Accord Healthcare, Inc., granted petition for panel rehearing, vacated its prior decision, and reversed the...more

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