News & Analysis as of

Claim Construction Patent Validity Appeals

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

Broadening on Reissue is Based on the Scope of the Language of the Claims, Not the Original Intention of the Applicant

Takeaways: - Claim construction for determining whether reissue claims are improperly broadened is based on fundamental claim construction cannons and not applicant intentions. - Patent Owners should check patented claims...more

Sheppard Mullin Richter & Hampton LLP

Federal Circuit Addresses District Court Oversight of Expert Testimony on Infringement

In Steuben Foods Inc. v. Shibuya Hoppmann Corporation, the Federal Circuit addressed the boundaries a district court may impose on experts by deeming their testimony wrong as a matter of law. Background - Steuben Foods...more

Proskauer - The Patent Playbook

Federal Circuit Affirms Stem Cell Product-by-Process Claims: Lessons in Claim Construction and Inherency from Restem LLV v. Jadi...

The Federal Circuit issued a precedential opinion on March 4, 2025, that serves as valuable guidance for product-by-process claims, particularly in the context of inherency in claim construction. In Restem, LLC v. Jadi Cell,...more

Alston & Bird

Patent Case Summaries | Week Ending April 11, 2025

Alston & Bird on

Azurity Pharmaceuticals, Inc. v. Alkem Laboratories Ltd., No. 2023-1977 (Fed. Cir. (D. Del.) Apr. 8, 2025). Opinion by Murphy (sitting by designation), joined by Moore and Chen. Azurity owns a patent directed to non-sterile...more

BakerHostetler

[Podcast] The Changing Landscape: Admissibility of Experts in Patent Cases

BakerHostetler on

Experts play a crucial role in patent cases. Experts opine on claim construction, infringement, invalidity and the proper amount of damages. And the exclusion of an expert witness can significantly impact the outcome of a...more

McDermott Will & Emery

Impermissible Convoyed Sales Wash Away Damages Award

The US Court of Appeals for the Federal Circuit affirmed a district court’s finding of infringement but vacated its damages award because the award improperly included auxiliary products lacking any functional relationship to...more

McDermott Will & Emery

The Clear and Unmistakable Standard for Applying Prosecution Disclaimer

The US Court of Appeals for the Federal Circuit found that a district court misconstrued claim terms based on a misapplication of the clear and unequivocal disavowal standard and vacated its noninfringement decision. Maquet...more

Mintz - Intellectual Property Viewpoints

The UPC and EPO Divide: Understanding Conflicting Revocation Proceeding Outcomes

With nearly 800 cases adjudicated or pending thus far at the Unified Patent Court (UPC), a possible procedural gap has appeared in the European patent system: no clear legal mechanism currently exists to resolve conflicting...more

McDermott Will & Emery

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

McDermott Will & Emery on

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

Vorys, Sater, Seymour and Pease LLP

The Precedent: Federal Circuit Sidesteps Ruling on the Reverse Doctrine of Equivalents Theory in Steuben Foods Inc. v. Shibuya...

In this edition of The Precedent, we outline the decision in Steuben Foods Inc. v. Shibuya Hoppmann Corp. This case addresses whether the reverse doctrine of equivalents (RDOE) is a viable defense to patent infringement....more

McDermott Will & Emery

Neck or Nothing? “Quotation” Invalidates On-Sale Bar

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit found the patents at issue invalid based on the patent owner’s “quotation” letter to a third party, concluding it was a commercial offer for sale under pre-America Invents Act...more

McDermott Will & Emery

Wave Goodbye: Arguments Incorporated by Reference Are Waived

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit affirmed the Patent Trial & Appeal Board’s patentability determination, finding that the patent challenger waived an argument it attempted to incorporate by reference to another...more

McDermott Will & Emery

Claim Cancelation Limits but Doesn’t Prohibit Assignor Estoppel Defense

McDermott Will & Emery on

On remand from the Supreme Court, the US Court of Appeals for the Federal Circuit reconsidered the boundaries of the doctrine of assignor estoppel. The Federal Circuit found that the patent assignor was estopped from...more

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions: Qualcomm Inc. v. Intel Corp., 6 F.4th 1256 (Fed....

Intel Corp. petitioned for six inter partes reviews (IPRs) challenging the validity of U.S. Patent No. 9,608,675, a patent directed to power management in wireless devices. In each proceeding, Intel and patent-owner Qualcomm...more

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

Federal Circuit Appeals from the PTAB and ITC: Summaries of Key 2021 Decisions

[co-author: Jamie Dohopolski] Last year, the continued global COVID-19 pandemic forced American courts to largely continue the procedures set in place in 2020. The U.S. Court of Appeals for the Federal Circuit was no...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - October 2021 #2

Kannuu Pty Ltd. v. Samsung Electronics Co., Appeal No. 2021-1638 (Fed. Cir. Oct. 7, 2021) - In our Case of the Week, the Federal Circuit addressed whether a forum selection clause in an NDA may prohibit a party from...more

McDonnell Boehnen Hulbert & Berghoff LLP

Horizon Pharma, Inc. v. Dr. Reddy's Laboratories Inc. (Fed. Cir. 2021)

Indefiniteness under U.S. patent law is a failure to satisfy the statutory requirements of 35 U.S.C. § 112(b), which reads:  "The specification shall conclude with one or more claims particularly pointing out and distinctly...more

Haug Partners LLP

Federal Circuit Clarifies Prior Decision on Limiting Claim Preambles

Haug Partners LLP on

On August 3, 2020, in Bio-Rad Labs., Inc. v. 10X Genomics, Inc., the Federal Circuit clarified its decision in TomTom v. Adolph regarding limiting claim preambles, holding that the preamble of the claim at issue could not be...more

Knobbe Martens

Federal Circuit Review - June 2019

Knobbe Martens on

One-year Clock for Filing IPR Petition Applies to Litigants and Parties that Become Privies of the Litigant Prior to Institution. In Power Integrations, Inc v. Semiconductor Components, Appeal No. 2018-1607, the Federal...more

McDermott Will & Emery

Obviousness Take Two

McDermott Will & Emery on

Finding that the district court improperly restricted a defendant’s ability to present the jury with relevant evidence of invalidity after a prior remand, the US Court of Appeals for the Federal Circuit vacated a district...more

Knobbe Martens

TEK Global, S.R.L. v. Sealant Systems International

Knobbe Martens on

Federal Circuit Summary - Before Prost, Dyk, and Wallach. Appeal from the United States District Court for the Northern District of California. Summary: When the Federal Circuit holds that a combination of references...more

WilmerHale

Federal Circuit Patent Updates - February 2019

WilmerHale on

Continental Circuits LLC v. Intel Corporation (No. 2018-1076, 2/8/19) (Lourie, Linn, Taranto)* - Lourie, J. Vacating the district court’s judgment of non-infringement of four asserted patents based on claim construction...more

Knobbe Martens

Federal Circuit Review - December 2018

Knobbe Martens on

Assignor Estoppel Does Not Apply in the IPR Context - In Arista Networks, Inc. v. Cisco Systems, Inc., Appeal Nos. 2017-1525, 2017-1577, the Federal Circuit held that the plain language of 35 U.S.C. § 311(a) unambiguously...more

Knobbe Martens

Hamilton Beach Brands, Inc. v. F'Real Foods, LLC

Knobbe Martens on

Federal Circuit Summary - Before Reyna, Wallach, and Taranto. Appeal from the Patent Trial and Appeal Board. Summary: A party must file a cross-appeal when their argument requires modification of a decision. Under the...more

Knobbe Martens

Arista Networks, Inc. v. Cisco Systems, Inc.

Knobbe Martens on

Federal Circuit Summary - Before Prost, Schall, and Chen. Appeal from the Patent Trial and Appeal Board. Summary: The plain language of 35 U.S.C. § 311(a) unambiguously leaves no room for assignor estoppel to apply in...more

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