News & Analysis as of

Patent Infringement Expert Testimony

A&O Shearman

UPC Court of Appeal clarifies approach to claim construction

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Insulet v EOFlow UPC_CoA_768/2024 (Ord_69078/2024) The Unified Patent Court (UPC) Court of Appeal has issued a significant decision that provides important guidance on the interpretation of patent claims in UPC...more

Smart & Biggar

Crisp boundaries: Federal Court defines the scope of protection for French fry manufacturing process patent

Smart & Biggar on

In McCain Foods Limited v J.R. Simplot Company (2025 FC 1078), the Federal Court of Canada found that the Defendant’s use of pulsed electric fields (PEF) to pretreat potatoes before further processing into French fries did...more

Morrison & Foerster LLP

When Your Life Sciences Are on the Line: IP Litigation and Trials

Morrison Foerster partners Kate Driscoll and Nate Mendell, both former federal prosecutors and members of the firm’s Investigations + White Collar Defense Group, hosted the tenth episode of When Your Life Sciences Are on the...more

Proskauer - The Patent Playbook

Federal Circuit Vacates $300 Million Verdict Against Apple, Orders Third Trial in LTE Patent Dispute

In a pivotal ruling for patent damages and standard-essential patent (SEP) litigation, the Federal Circuit vacated a $300 million award against Apple in a long-standing dispute with Optis Cellular Technology, LLC. See Optis...more

Hudnell Law Group

Federal Circuit Enforces Gatekeeping Role in Patent Damages Testimony

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On May 21, 2025, the United States Court of Appeals for the Federal Circuit, sitting en banc, reversed a $20 million damages award against Google LLC in a patent infringement dispute with EcoFactor, Inc. EcoFactor, Inc. v....more

Akin Gump Strauss Hauer & Feld LLP

District Court Declines to Order Production of Test Results Referenced in Complaint and Initial Disclosures

The Northern District of Ohio denied a motion to compel the plaintiff to produce test results referenced in its initial disclosures and complaint. The court found that because the “test results are not facts but rather are...more

Knobbe Martens

Running in Place: When a Running Royalty Is Actually a Lump Sum License

Knobbe Martens on

ECOFACTOR, INC. V. GOOGLE LLC - Before the en banc court, Moore, Lourie, Dyk, Prost, Reyna, Taranto, Chen, Hughes, Stoll, and Stark. Appeal from the United States District Court for the Western District of Texas. A district...more

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

U.S. IP Update – June 2025

Sterne Kessler’s U.S. IP Update is a newsletter delivering the latest developments in U.S. intellectual property law, tailored for companies and legal counsel in Korea. Stay informed on key court decisions, policy changes,...more

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

Baker Donelson

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

Baker Donelson on

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 

Irwin IP LLP on

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

Haug Partners LLP

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

Haug Partners LLP on

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

White & Case LLP on

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

Venable LLP

Federal Circuit Issues Rare En Banc Decision on Patent Damages

Venable LLP on

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

Alston & Bird on

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

Fish & Richardson on

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

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 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

BakerHostetler

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

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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

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