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Expert Testimony Patent Litigation

Mintz - Intellectual Property Viewpoints

Split Federal Circuit Decision Emphasizes Need for Skilled Counsel

Complex damages analyses require skilled professionals who understand the law and facts of each case to navigate to success. The Federal Circuit’s recent en banc ruling in EcoFactor v. Google reiterates that point. The...more

Morgan Lewis

Meet the New Discretionary Denial Factor on the PTAB Block: Settled Expectations

Morgan Lewis on

USPTO Acting Director Coke Morgan Stewart recently issued a decision discretionarily denying five petitions for inter partes review (IPR) filed by iRhythm against patents owned by Welch Allyn based on a factor that had not...more

Baker Donelson

Implications of the Federal Circuit's Decision in EcoFactor, Inc. v. Google LLC

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The Federal Circuit's recent en banc decision in EcoFactor, Inc. v. Google LLC has already been touted as a landmark decision on expert damages testimony in patent cases. In EcoFactor, the Federal Circuit weighed in on the...more

Irwin IP LLP

Unreliable Expert Testimony Shall Not Pass 

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On May 21, 2025, the Federal Circuit en banc banished the notion that the reliability of an expert’s methodology under Federal Rule of Evidence 702 (“Rule 702”) is a question of weight, not admissibility. The en banc Court...more

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

Latest Director Discretionary Denial Decision in iRhythm Provides Valuable Insights

On June 6, 2025, Acting USPTO Director Stewart issued a decision in iRhythm Tech. v. Welch Allyn, Inc., IPR2025-00363, Paper 10 (and four related IPRs), which granted Patent Owner’s request for discretionary denial. This is...more

Haug Partners LLP

License to Exclude? Federal Circuit Emphasizes Need for Reliability of Patent Damages Experts in EcoFactor Inc. v. Google LLC

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On May 21, 2025, in an en banc decision, the U.S. Court of Appeals for the Federal Circuit vacated its earlier panel ruling and remanded the case of EcoFactor Inc. v. Google LLC for further proceedings. The court focused on...more

White & Case LLP

Federal Circuit Tightens Standard for Patent Damages Experts

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On May 21, 2025, the Federal Circuit issued an en banc decision in EcoFactor, Inc. v. Google LLC, highlighting the critical gatekeeping role of district courts under Federal Rule of Evidence 702 and Daubert standards,...more

WilmerHale

Federal Circuit Patent Watch: En Banc Federal Circuit Finds Lump Sum Settlement Licenses Insufficient to Support $X Royalty Rate...

WilmerHale on

Precedential and Key Federal Circuit Opinions - ECOFACTOR, INC. v. GOOGLE LLC [OPINION] (2023-1101, 5/21/2025) (Lourie, Dyk, Prost, Reyna, Taranto, Chen, Hughes, Stoll, Stark) - Moore, C.J. The en banc Court reversed...more

Venable LLP

Federal Circuit Issues Rare En Banc Decision on Patent Damages

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In the first en banc decision for a utility patent case since 2018, the Federal Circuit reversed a district court's denial of a new trial on damages in EcoFactor, Inc. v. Google LLC and held that EcoFactor's damages expert's...more

Baker Botts L.L.P.

Patent Apportionment: Anything You Say in a License Agreement May Be Used Against You in a Court of Law - UPDATED May 2025

Baker Botts L.L.P. on

On May 21, 2025, the Federal Circuit “reverse[d] the district court’s denial of Google’s motion and remand[ed] for a new trial on damages.” The decision resulted in an 8-2 vote, with Judges Reyna and Stark dissenting. The...more

Alston & Bird

Patent Case Summaries | Week Ending May 23, 2025

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EcoFactor, Inc. v. Google LLC, No. 2023-1101 (Fed. Cir. (W.D. Tex.) May 23, 2025). En banc opinion by Moore, joined by Lourie, Dyk, Prost, Taranto, Chen, Hughes, and Stoll. Opinion concurring in part and dissenting in part by...more

McDermott Will & Emery

En Banc Federal Circuit Cools Damages Award Because of Improper Expert Testimony

McDermott Will & Emery on

In an en banc decision in EcoFactor, Inc. v. Google LLC, the US Court of Appeals for the Federal Circuit concluded that the district court abused its discretion by admitting testimony from a damages expert that a lump-sum...more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Emphasizes Gatekeeper Role of Court in Damages Expert Evidence

On May 21, in EcoFactor, Inc. v. Google LLC, the Federal Circuit issued an en banc ruling in which the court remanded the case for a new trial on damages. In so doing, the Federal Circuit emphasized the role of the court in...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: EcoFactor, Inc. v. Google LLC

EcoFactor, Inc. v. Google LLC, Appeal No. 2023-1101 (Fed. Cir. May 21, 2025) In its first en banc decision of the year, the Federal Circuit reversed a district court’s admission of expert testimony concerning damages,...more

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

Federal Circuit in EcoFactor, Inc. v. Google LLC Probes the Limits for Gatekeeping Damages Testimony

Last week, in EcoFactor, Inc. v. Google LLC, the Federal Circuit issued its first en banc decision in a utility patent case in several years. The case involves the gatekeeping function of district courts vis-à-vis expert...more

Fish & Richardson

En Banc Federal Circuit Grants Google a New Trial in EcoFactor Case

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On May 21, the U.S. Court of Appeals for the Federal Circuit, sitting en banc, released its opinion in EcoFactor, Inc. v. Google, LLC. In an 8-2 decision, the court reversed a $20 million jury verdict, holding that the...more

Proskauer - The Patent Playbook

EcoFactor v. Google: The Federal Circuit Clarifies Damages Expert Admissibility

Admissibility standards for patent damages experts has come under scrutiny. Previously, we highlighted the EcoFactor v. Google case regarding Google’s petition for rehearing en banc to address the admissibility of EcoFactor’s...more

BakerHostetler

Gatekeeping Reasserted: The Federal Circuit’s En Banc Ruling in EcoFactor v. Google

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The Federal Circuit issued its long-awaited en banc opinion in EcoFactor v. Google, which provides further clarity on the admissibility standards for damages experts under Rule 702. This decision reverses the original panel’s...more

Sheppard Mullin Richter & Hampton LLP

No Credit Where It Isn’t Due: The Importance of Preemption and Inventorship in Patent Law

Mr. Storms, an individual with significant experience with Bitcoin mining, is the founder and sole employee of BearBox LLC. Mr. McNamara and Dr. Cline co-founded Lancium in November 2017 with the intention of co-locating...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

Fish & Richardson

PTAB Issues FAQs on Interim Process for Workload Management

Fish & Richardson on

Last week, the Patent Trial and Appeal Board (PTAB) issued a list of FAQs related to the new bifurcated process for discretionary denial established in the March 26 memorandum issued by Acting Director Stewart. The FAQs...more

Knobbe Martens

No Error: The Board Committed No Procedural Error by Relying on Evidence Outside of the Prior Art Reference

Knobbe Martens on

SAGE PRODUCTS, LLC v. STEWART [OPINION] - Before Reyna, Cunningham, and Stark. Appeal from the United States Patent and Trademark Office, Patent Trial and Appeal Board. The Board did not abuse its discretion by relying on...more

Jones Day

Expert Testimony Supporting POPR Can Be An Effective Strategy

Jones Day on

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

Proskauer - The Patent Playbook

Federal Circuit Affirms That Expert Testimony Must Be Based on Competent and Reliable Evidence

Mirror Worlds Technologies, LLC (“Mirror Worlds”) sued Meta Platforms, Inc. (“Meta”)—formerly Facebook, Inc.—in the Southern District of New York for patent infringement. The lawsuit involved three patents related to storing,...more

Baker Botts L.L.P.

Patent Apportionment: Anything You Say in a License Agreement May Be Used Against You in a Court of Law

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Over the last several years, the Federal Circuit has increasingly scrutinized patent litigants’ reliance on “comparable licenses” as a means for calculating a reasonable royalty, including whether the license needs to be...more

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