News & Analysis as of

Appeals Expert Testimony

McDermott Will & Schulte

Dim damages methods can doom bright ideas

In a mixed ruling on evidentiary exclusions and damages methodology, the US Court of Appeals for the Federal Circuit affirmed in part, reversed in part, vacated in part, and remanded a district court’s decision that excluded...more

Faegre Drinker Biddle & Reath LLP

Double Take: Fifth Circuit’s Dual BELO Rulings Show Both General and Specific Causation Are Essential

We previously blogged about a decision in the In re Deepwater Horizon BELO litigation – Ruffin v. BP Exploration & Production, Inc. – in which the Fifth Circuit affirmed summary judgment for defendants in an alleged chemical...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Jiaxing Super Lighting Electric Appliance, Co. Ltd. v. CH Lighting Technology Co., Ltd.

Jiaxing Super Lighting Electric Appliance, Co. Ltd. v. CH Lighting Technology Co., Ltd., Appeal No. 2023-1715 (Fed. Cir. July 28, 2025) In our Case of the Week, the Federal Circuit addressed three issues arising from a...more

A&O Shearman

Evidence Exclusion And Daubert Motion Denials Must Be Supported By Valid Legal Rule And Reasoning; Damage Calculation Must Account...

A&O Shearman on

In Jiaxing Super Lighting Elec. Appliance, Co. v. CH Lighting Tech. Co., Ltd, the Court of Appeals for the Federal Circuit reviewed the judgment in a patent infringement case involving three patents owned by Jiaxing Super...more

Marshall Dennehey

Superior Court Reverses Nonsuit, Holds Trial Court Bound by Prior Ruling on Expert Qualification

Marshall Dennehey on

Joyner v. Thomas Jefferson Univ. Hosps., Inc., No. 534 EDA 2024, 2025 WL 933175, at *1 (Pa. Super. Ct. Mar. 26, 2025), reargument denied (May 29, 2025) - In her suit, the pro se plaintiff alleged negligent placement of leg...more

Goldberg Segalla

Fourth Department Denies Defendant’s Appeal on Issue of Causation and Affirms Judgment Entered in Favor of Plaintiff

Goldberg Segalla on

Supreme Court of New York, Appellate Division, Fourth Department - In this personal injury action, plaintiff Joseph Skrzynski alleged asbestos exposure from brakes and other related products while working at an automobile...more

Marshall Dennehey

Medical Malpractice Suit Dismissed for Inadequate Affidavit of Merit in Wrongful Death Following Kidney Biopsy

Marshall Dennehey on

Sovelove v. Shirazi, A-1540-23, Jun. 17, 2025 - The decedent had undergone an elective kidney biopsy and suffered a large retroperitoneal bleed, resulting in her death. The plaintiff, individually and as the estate executor,...more

A&O Shearman

UPC Court of Appeal clarifies approach to claim construction

A&O Shearman on

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

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

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

Faegre Drinker Biddle & Reath LLP

Fifth Circuit Clouds Threshold Dose Analysis in Ruffin v. BP

Plaintiffs in toxic tort cases must prove both general and specific causation, generally through the testimony of experts. Experts must establish that a specific chemical exposure can (and did) cause the specific injury at...more

McDermott Will & Schulte

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

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

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