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Damages Daubert Standards

WilmerHale

Google Victory Is First Step to Address Patent Damages Imbalance

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Patents are a mutually beneficial agreement between inventors and the government. Each side makes concessions in service of their own, and the greater, good. It’s a careful balance, where policy and rules that are too...more

Fenwick & West LLP

Key Federal Circuit Patent Rulings Impacting Your Business…

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In EcoFactor, Inc. v. Google LLC, the en banc United States Court of Appeals for the Federal Circuit reversed a district court’s denial of a new trial on damages because EcoFactor’s expert’s opinion was unreliable under Fed....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

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

McDermott Will & Emery

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

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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

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

Carlton Fields

Florida Appeals Court Decisions: Week of October 14-18, 2024

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U.S. Eleventh Circuit Court of Appeals - Siples v. BR Exploration – Daubert, causation testimony, toxic exposure - Lozman v. Riviera Bch – eminent domain, comprehensive plan, ripeness - Hidroelectrica Santa Rita v....more

WilmerHale

The Broken Balance: How “Built-in Apportionment” and the Failure to Apply Daubert Have Distorted Patent Infringement Damages

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The United States patent system is designed to be a balance: in exchange for the inventor disclosing their invention to the public, pa-tentees are granted exclusive rights to that invention for a period of time. This ensures...more

Shook, Hardy & Bacon L.L.P.

Class Action Decisions Published April 2024 - Developments in Class Action Law

Predominance and Classwide Damage Models. The Ninth Circuit held that class action plaintiffs may rely on a reliable though not-yet-executed damages model (in this case a proposed but not done conjoint analysis) to...more

Carlton Fields

Classified Monthly: A Roundup of Class Action Decisions From Federal Appellate Courts April 2024

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The Roundup covers notable class action decisions each month from federal appellate courts, as well as notable Supreme Court class action cert petitions....more

Sheppard Mullin Richter & Hampton LLP

Cyntec Company, Ltd. v. Chilisin Electronics Corp., Chilisin America Ltd. Nos. 2022-1873, (Fed. Cir. October 16, 2023)

This case is primarily about the Daubert standard as applied to expert testimony on damages. The Federal Circuit reversed the Northern District of California’s admission of expert testimony on damages, which relied on...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - October 2023 #3

Cyntec Company, Ltd. v. Chilisin Electronics Corp., Appeal No. 2022-1873 (Fed. Cir. Oct. 16, 2023) In this week’s Case of the Week, the Federal Circuit reversed and remanded a California district court’s judgment as a...more

McDermott Will & Emery

Expert Testimony Excluded Based on Inadmissible Evidence

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Circuit Judge Bryson, sitting by designation in the US District Court for the District of Delaware, excluded a plaintiff’s damages expert opinion because the evidence relied upon by the expert was unreliable and therefore...more

Faegre Drinker Biddle & Reath LLP

Exclusion of Damages Expert at Class Certification Stage Results in Partial Denial of Certification Motion

Just a decade ago, it was still an open question whether parties could challenge the admissibility of expert testimony in class certification proceedings. The United States Supreme Court recognized the issue in Wal-Mart...more

Jenner & Block

Ninth Circuit Rejects Challenges to Conjoint Analysis in Consumer Class Action

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In recent years, conjoint analysis has proliferated as a methodology for calculating class-wide damages in consumer class actions. While conjoint analysis first emerged as a marketing tool for measuring consumers’ relative...more

McDermott Will & Emery

One for All, and All for One . . . Except When It Comes to Patent License Comparability

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Examining whether portfolio patent licenses can be sufficiently comparable to a single-patent license for the purposes of supporting a patent damages verdict, a split panel of the US Court of Appeals for the Federal Circuit...more

Patterson Belknap Webb & Tyler LLP

Proving Retail Sales Figures In Consumer Class Actions: Different Approaches Lead To Very Different Results

To prove damages in a consumer class action, the named plaintiff must show—among other things—how many units of the defendant’s product were purchased by consumers in the relevant state (or states). This is easier said than...more

Fisher Phillips

Supreme Court Raises The Bar For Class Actions

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Today the U.S. Supreme Court rendered a pivotal decision, holding that as a prerequisite for certification of a class action, a plaintiff must introduce admissible evidence to show that the case is susceptible to awarding...more

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