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Expert Testimony Appellate Courts

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

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

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

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

Marshall Dennehey

New Jersey Revises Jury Charge on Proximate Cause in Legal Malpractice

Marshall Dennehey on

A recent update to New Jersey’s Model Civil Jury Charges marks a significant development in legal malpractice law—and directly reflects the work of attorneys in our Mount Laurel, New Jersey office, Jack Slimm and Jeremy...more

Maron Marvel

Mass and Toxic Tort Case Update - Asbestos

Maron Marvel on

Maffei v. A.O. Smith Water Prods. Co. (In re N.Y.C. Asbestos Litigation), 2025 N.Y. Slip Op. 1425 (N.Y. App. Div. 2025) - Valuing asbestos cases can sometimes be complicated but on March 13th, 2025, the NY Appellate Court...more

Goodell, DeVries, Leech & Dann, LLP

Appellate Court Undermines Rochkind by Conflating Rule 5-702 and Rule 2-501

[DISCLOSURE: Although I do not represent the defendant hospital in Jabbi v. Adventist Healthcare, Inc. No. 2071 (Sept. Term, 2023) (March 5, 2025) (reported), I often represent Maryland hospitals seeking to exclude causation...more

Snell & Wilmer

Eminent Domain Update: Fourth Circuit Upholds Landowner’s Right To Testify on Property Value and Splits With First Circuit on...

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The U.S. Court of Appeals for the Fourth Circuit recently announced two important rules in two eminent domain opinions. Both cases involved pipeline access easements that the condemnor properly took under the Natural Gas Act....more

Foley Hoag LLP

Product Liability Update - February 2025

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Foley Hoag LLP publishes this quarterly Update primarily concerning developments in product liability and related law from federal and state courts applicable to Massachusetts, but also featuring selected developments for New...more

Baker Botts L.L.P.

The Federal Circuit Tackles the Role of Expert Opinions in Patent Damages in EcoFactor Inc. v. Google, LLC

Baker Botts L.L.P. on

The Federal Circuit rarely decides cases en banc. For example, in 2024, the Court only heard one en banc case. Stunningly, on September 25, 2024, the Federal Circuit granted Google’s petition for rehearing en banc in the case...more

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

2024 Federal Circuit IP Appeals: Summaries of Key 2024 Decisions

2024 brought exciting developments at the Federal Circuit. The court issued its first en banc decision in a patent case in five years in LKQ, which significantly altered the standard for proving obviousness of a design...more

Montgomery McCracken

Recent Third Circuit Opinion Reinforces That Daubert Requires Courts to Examine the Data Underlying an Expert’s Analysis

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February 11, 2025 Types : Alerts Meta Platforms, Inc. recently defeated certification of a class of consumers who claim the company lied about its user privacy safeguards and violated antitrust laws. ...more

Blank Rome LLP

New Jersey Appellate Division Makes Clear Experts Must Demonstrate a Scientifically Recognized Methodology

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Recently, the New Jersey Appellate Division, in Dorrell v. Woodruff Energy, Inc., vacated a 2018 judgment against Chevron U.S.A., Inc. (“Chevron”) that had found Chevron liable for gasoline contamination. More specifically,...more

Fox Rothschild LLP

Decision to Forgo Interview of Special Needs Child in Custody Determination Affirmed

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Under the New Jersey Court Rules, a trial judge presiding over a custody hearing is free to conduct an in-camera interview with the children whose custody is at issue, whether on the judge’s own accord or upon a party’s...more

Marshall Dennehey

Key New Jersey Appellate Win Secured in Legal Malpractice Action

Marshall Dennehey on

A decision impacting the defense of such actions from damages claims by new businesses - In an Appellate decision impacting the defense of legal malpractice actions arising out of claims for damages by new businesses, Jack...more

Fox Rothschild LLP

Can a Trial Judge Grant a Final Restraining Order by Randomly Relying on Battered Woman Syndrome?

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Very often, victims or purported victims of domestic violence hear about the concept of the cycle of domestic violence. Also, it is not uncommon for victims of domestic violence not to report acts of domestic violence once or...more

Carlton Fields

Florida Appeals Court Decisions: Week of December 16-20, 2024

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U.S. Eleventh Circuit Court of Appeals - NLRB v. ArrMaz Products - collective bargaining, election - Lubin v. Starbucks - class action, ERISA, arbitration - USA v. Ogiekpolor - speedy trial...more

Carlton Fields

Florida Appeals Court Decisions: Week of December 9-13, 2024

Carlton Fields on

U.S. Eleventh Circuit Court of Appeals - USA v. Armstrong - sentencing - MH v. Omegle.com - online sex trafficking, Marsha’s Law, FOSTA...more

Carlton Fields

Florida Appeals Court Decisions: Week of December 2-6, 2024

Carlton Fields on

U.S. Eleventh Circuit Court of Appeals - USA v. Simmons - playing video in closings - Nehme v. Fla Int’l Univ Bd of Trustees - ADA, medical school - USA v. Graham - RICO saga, search and seizure, jury selection,...more

Hinshaw & Culbertson - Lawyers for the...

Lack of Expert Testimony Results in $1.4 Million Legal Malpractice Verdict Being Overturned

Chamblee Ryan, P.C. v. JBS Carrier, Inc., No. 12-23-00125-CV (Tex. App. — Tyler June 12, 2024) - Brief Summary - Plaintiff, JBS Carriers, Inc. (“JBS”), sued Chamblee Ryan, P.C. (the “defendant”) for legal malpractice related...more

Stevens & Lee

Thinking Appellate Reconsideration? Remember A Few Good Men

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During the trial in the 1992 film A Few Good Men, Lt. Commander Joanne Galloway (played by Demi Moore) lodges a “strenuous” objection to expert witness testimony. The presiding judge, Col. Julius Randolph (portrayed by J.A....more

Warner Norcross + Judd

How Much Evidence is Necessary for a Will or Trust Contestant to Carry Burden of Proof?

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The Michigan Court of Appeals recently issued a decision that addresses how much evidence is necessary for a will or trust contestant to carry burden of proof. In this case, the decedent, Matthew, entered an assisted living...more

Fox Rothschild LLP

What Rulings Should You Include in a Notice of Appeal?

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For both civil and criminal appeals, the North Carolina Rules of Appellate Procedure require an appealing party who is filing a written notice of appeal to identify “the judgment or order from which appeal is taken.”...more

Wiley Rein LLP

4 Important Class Cert. Issues From 2 Data Breach Cases

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Data breach lawsuits are challenging cases for plaintiffs. Assuming they are able to survive a motion to dismiss on grounds of Article III standing in the first instance, plaintiffs next bear the high burden of achieving...more

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