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Federal Rules of Evidence

Mintz - Intellectual Property Viewpoints

Federal Circuit: ITC Experts May Rely on Source Code Not Admitted at Hearing

On May 11, 2026, the US Court of Appeals for the Federal Circuit issued a precedential decision in Bissell, Inc. v. International Trade Commission, affirming the ITC’s final determination in Investigation No. 337-TA-1304,...more

Hicks Johnson

The Next Evidentiary Shift: AI, Deepfakes, and Proof in the Courtroom

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AI‑generated outputs and digital media are moving from business tools to courtroom exhibits. As their use expands, the federal rulemaking process governing the Federal Rules of Evidence is increasingly focused on a central...more

Kilpatrick

5 Key Takeaways | Authenticity on Trial: AI, Synthetic Evidence, and the Future of Proof

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The Atlanta Bar Association Litigation Section hosted a May 8, 2026, panel discussion examining how artificial intelligence is beginning to challenge traditional assumptions about authenticity, reliability, admissibility, and...more

Lowenstein Sandler LLP

2nd Circ. Clarifies When Prior Good Acts May Be Admissible

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Rule 404(b) of the Federal Rules of Evidence has long served as a gatekeeping mechanism in criminal and civil trials, barring parties from using evidence of prior conduct to argue that a person acted in conformity with a...more

IMS Legal Strategies

Why Federal Rule 107 Matters for Your Trial Presentations

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Take a moment, close your eyes, and imagine this: You have just been selected to serve on a jury. You begrudgingly enter the courtroom, take your seat in the jury box, and begin watching the persuasive battle unfold....more

McGuireWoods LLP

Courts Begin to Address AI’s Evidentiary Issues: Part I

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As lawyers’ AI use dramatically expands, courts have begun to address both types of evidentiary protections for AI-related communications and results. Popular public AI service providers’ ugly disclaimers of confidentiality...more

Bowditch & Dewey

New Tech Meets Old Law: Further Clarification on the Discoverability of AI Output

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Two recent federal cases, Warner v. Gilbarco, Inc., No. (E.D. Mich. Feb. 10, 2026), and United States v. Bradley Heppner, No. 1:25-cr-00503-JSR (S.D.N.Y. Feb. 17, 2026), provide further clarity on how the attorney-client...more

Weber Gallagher Simpson Stapleton Fires &...

How to Identify AI-generated Evidence and Hold Counsel Accountable

Artificial intelligence (AI) has become a part of nearly every industry, and the legal field is no exception. More specifically, AI-generated evidence is constantly evolving, and it is important for attorneys to keep learning...more

Foley & Lardner LLP

Health Care Litigation: Selecting the Right Expert is Critical for a Successful Case

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Health care litigation is often inherently complex, regardless of the nature of the health care dispute. Whether the audience is a jury, judge, or arbitrator (or other tribunal) a case may require explanation of technical...more

EDRM - Electronic Discovery Reference Model

Evidence Sufficient to Demonstrate that Audio Recording Was Not a Deepfake

In Burnley v. Valentin, 2026 WL 767145 (E.D. Va. Mar. 18, 2026), the proponent of an audio recording survived a challenge that it was a deepfake. Burnley involved two motions to enforce settlement agreements....more

Fish & Richardson

The Federal Circuit Continues to Evolve Its Daubert Gatekeeping Framework: Willis and Exafer

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The Federal Circuit’s en banc decision in EcoFactor, Inc. v. Google LLC, 137 F.4th 1333 (Fed. Cir. 2025), clarified the admissibility standard for patent damages expert testimony under Federal Rule of Evidence 702....more

Hogan Lovells

What holds up in court? Alan Parfery on AI, evidence and the discipline of the courtroom

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At the Westminster Legal Policy Forum's 26 February 2026 conference on AI in the justice system, much of the discussion focused on reform at system level – reducing delay, improving digital infrastructure, widening access to...more

McDermott Will & Schulte

Tree-mendous award: Damages expert royalty opinions are lit

The US Court of Appeals for the Federal Circuit affirmed a damages verdict amounting to tens of millions of dollars. The Court found that the patentee’s damages expert correctly apportioned value to the patented feature and...more

White and Williams LLP

From Warning Labels to Fire Causation: Where Plaintiffs’ Expert Fell Short in Qasim

In Qasim v. Spectrum Brands Holdings, Inc., C.A. No. 21-18744, 2026 U.S. Dist. LEXIS 5064, the United States District Court for the District of New Jersey considered whether the plaintiffs’ expert’s opinions were admissible...more

Morrison & Foerster LLP - Federal Circuitry

“Approximation and Uncertainty” in Patent Damages: The Federal Circuit Draws the Admissibility-Weight Line

Damages have become one of the most closely watched—and fiercely litigated—issues in modern patent litigation. In recent decisions, the Federal Circuit has sharpened its focus on district courts’ gatekeeping obligations for...more

Jenner & Block

A Recent Federal Circuit Decision Has Clouded the District Court’s Gatekeeping Role

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The Federal Circuit’s recent decision in Barry v. DePuy Synthes Companies reversed a trial court’s exclusion of two expert witnesses, further blurring the line for practitioners between the court’s gatekeeping role and the...more

EDRM - Electronic Discovery Reference Model

Detecting Deep Fakes

This morning, I was approached to present in Texas on deep fake evidence and what litigators need to know to confront it. It’s to be called, “Real or Rigged: How to Know Whether Evidence Is Fake.” I realized, to my chagrin,...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases: Willis Electric Co., Ltd. v. Polygroup Ltd.

In our Case of the Week, the Federal Circuit reviewed expert damages testimony en route to affirming a $42.5 million reasonable royalty award on appellant Polygroup’s infringing artificial Christmas trees....more

Lowenstein Sandler LLP

Second Circuit OKs ‘Good Acts’ Evidence on Intent

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On February 18, the United States Court of Appeals for the Second Circuit issued a significant decision in United States v. Cardenas, vacating a drug conspiracy conviction and remanding the case for a new trial. The opinion...more

Meyers Nave

Proposed New Federal Rule Regarding AI-Generated Evidence

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Evidence generated by artificial intelligence (“AI”) is making its way into courtrooms. As a result, the U.S. Judicial Conference’s Advisory Committee has proposed a new rule “to regulate the admissibility of machine evidence...more

McGuireWoods LLP

Does the Attorney-Client Privilege Rest on Statutory Provisions, Court Rules or the Common Law?

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Most lawyers are familiar with the basic concepts underlying the absolute, but fragile, attorney-client privilege. But beyond those very basic principles, where do lawyers look for more specific guidance? In Johnson v....more

Goldberg Segalla

Defendant’s Motion for Plaintiff to Disclose Settlements Granted by Louisiana Eastern District Court

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Court: United States District Court for the Eastern District of Louisiana - Plaintiffs Erica Dandry Constanza and Monica Dandry Hallner allege the decedent, Michael P. Dandry Jr., had occupational exposure to asbestos by...more

Haug Partners LLP

Finding that Expert Testimony “Aligns” with the District Court’s Claim Construction, the Federal Circuit “Backs” Its Admissibility

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On January 20, 2026, the Federal Circuit (per Judge Stark and joined by Judge Taranto, with Judge Prost dissenting) reversed a decision from the Eastern District of Pennsylvania, excluding two experts who testified for...more

Freeman Mathis & Gary

Eleventh Circuit tightens Rule 803(4) purpose requirement in recent case

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In United States v. Keegan (Dec. 17, 2025), the Eleventh Circuit addressed a defense attempt to use Federal Rule of Evidence 803(4)—the hearsay exception for statements “made for—and … reasonably pertinent to—medical...more

Fish & Richardson

Federal Circuit Signals Tension in Expert Testimony Jurisprudence: EcoFactor and Barry

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The Federal Circuit’s recent decisions in EcoFactor, Inc. v. Google, LLC (en banc) and Barry v. DePuy Synthes Companies have refined the landscape regarding the admissibility of expert testimony under Federal Rule of Evidence...more

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