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Expert Testimony Federal Rules of Civil Procedure

Miller Canfield

Navigating the Survey Seas: The Timing and Impact of Survey Evidence in Trademark Litigation

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In the world of trademark litigation, surveys play a crucial role in tackling issues like confusion, secondary meaning, and dilution. However, the timing of survey disclosures often sparks heated debates, as neither side...more

Goldberg Segalla

Defendant’s Motion for Summary Judgment Denied by Louisiana Federal District Court

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United States District Court for the Western District of Louisiana, Shreveport Division - In this asbestos action, plaintiff Reginald Short alleged asbestos exposure from, among other things, asbestos-containing shipping...more

Kerr Russell

Five Tips for Preparing to Testify at a Deposition

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Preparing for a deposition can be challenging whether it is a person’s first or hundredth time testifying under oath. Being questioned frequently causes anxiety. But the experience does not have to be so daunting with...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

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

Robinson Bradshaw

Old Dogs and New Tricks: Supreme Court Denies Certiorari in Ninth Circuit Case Allowing Reliance on Inadmissible Expert Work for...

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Earlier this month, the Supreme Court declined to hear an appeal from the Ninth Circuit’s decision in Lytle v. Nutramax Laboratories, Inc. affirming the certification of a class of owners of elderly dogs, alleging that the...more

Vorys, Sater, Seymour and Pease LLP

The Precedent: The Federal Circuit Remands and Reassigns District Court Patent Infringement Case to a New Judge

In this edition of The Precedent, we outline the decision in Trudell Medical International Inc. v. D R Burton Healthcare LLC. The U.S. Court of Appeals for the Federal Circuit recently affirmed in part, reversed in part and...more

Baker Botts L.L.P.

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

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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

Esquire Deposition Solutions, LLC

AI Expert’s Report Deemed Unreliable Due to “Hallucinations” Within

“The irony.” So wrote federal district judge Laura M. Provinzino when she rejected as unreliable an artificial intelligence expert’s report that was found to have contained three non-existent, AI-generated citations. The...more

Knobbe Martens

New Trial Granted Because “Nearly All” of the Defendant’s Noninfringement Evidence Was Untimely

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The district court erred by admitting untimely expert testimony on noninfringement and by refusing to grant a new trial after the jury found noninfringement. Trudell Medical International (“Trudell”) sued D R Burton...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

Verrill

"The Irony": Can attorneys trust experts in the age of AI?

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In 2023, a new law went into effect in Minnesota to regulate the use of deep fake technology to influence elections. In 2024, Christopher Kohls, a YouTube personality known as “Mr Reagan,” and Rep. Mary Franson of the...more

Morgan Lewis

Expert Testimony May Be Limited if ‘Confidential’ Information Is Withheld Under Section 6103

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Expert witnesses can be critical to defending a tax position—but what happens when an expert must maintain confidentiality over information that is important to their analysis? Preserving this confidentiality while ensuring a...more

Foley & Lardner LLP

You’ve Been Sued: Now What?

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Being served with a lawsuit is frustrating, and sometimes nerve-racking, even for seasoned in-house counsel. Having a plan in place to quickly and appropriately address new lawsuits can ease the stress of being sued....more

Zuckerman Spaeder LLP

New Question for Expert Witness: Who Drafted This Report, You Or Your Machine?

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A federal judge in Minnesota recently granted a motion to exclude an expert declaration explaining the dangers of AI deepfakes because the declaration itself contained AI-hallucinated citations. The case was a First Amendment...more

Faegre Drinker Biddle & Reath LLP

Sixth Circuit Applies FRE 702 to Class Certification Experts and Highlights Commonality and Predominance Issues for Products That...

Class certification decisions under Rule 23 of the Federal Rules of Civil Procedure mark a critical stage in any putative class action lawsuit. Rule 23(a) requires plaintiffs to prove, among other things, that “there are...more

Faegre Drinker Biddle & Reath LLP

To Depose or Not to Depose: When Challenging Opposing Nonretained Experts Becomes Challenging

Federal Rule of Civil Procedure 26(a)(2) requires parties to disclose the opinions of experts who may present evidence at trial. If the disclosures are inadequate, Rule 37(c) requires exclusion of the opinions “unless the...more

Zelle  LLP

Federal Court Properly Applies Concurrent Causation and Rejects an “Expert” Opinion –Thompson v. State Farm Lloyds

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U.S. Magistrate Judge Andrew Edison of the United States District Court for the Southern District of Texas recently issued a decision granting summary judgment for an insurance carrier in a first-party case involving alleged...more

Arnall Golden Gregory LLP

Government Investigations Team Insights - July 2024

AGG’s Government Investigations Team Insights provides periodic updates covering legal and regulatory topics. Our team, which includes former federal prosecutors, SEC enforcement attorneys, and federal agency attorneys, has...more

Fuerst Ittleman David & Joseph

Federal Litigation Update: The Eleventh Circuit Clarifies When Expert Reports are Required by Fed. R. Civ. P. 26(a)(2)(B).

On August 4, 2023, in Cedant v. United States, No. 21-12661, –F.4th–, 2023 WL 4986402 (11th Cir. August 4, 2023), the Eleventh Circuit clarified who must provide expert reports under Fed. R. Civ. P. 26(a)(2)(B). More...more

Buckingham, Doolittle & Burroughs, LLC

“Active Clinical Practice” Requirements for Expert Witnesses Now Evaluated at the Time of Alleged Malpractice

In recent years, issues surrounding the admissibility of expert witness testimony in medical malpractice matters have been more prevalent than ever. In general, Ohio law mandates that medical claims are sufficiently supported...more

Jenner & Block

Client Alert: Fifth Circuit Guidance for Newly-Offered Expert Opinions and the Concurrent Causation Doctrine in Insurance Coverage...

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The United States Court of Appeals for the Fifth Circuit’s recent opinion in Majestic Oil, Inc. v. Certain Underwriters at Lloyd's, London Subscribing to Policy Number W1B527170201, No. 21-20542 (5th Cir. Mar. 17, 2023),...more

White and Williams LLP

Mind Over Matter: Court Finds Expert Opinion Based on NFPA 921 Reliable Despite Absence of Physical Testing

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In Smith v. Spectrum Brands, Inc., 2022 U.S. Dist. LEXIS 142262, the United States District Court for the Eastern District of Pennsylvania (District Court) considered whether the plaintiffs’ liability expert met the...more

Holland & Knight LLP

Podcast - Finding the Balance

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In the fourth episode of his "Ethical Witness Preparation" podcast series, "Finding the Balance," litigation attorney Dan Small draws a parallel between witness preparation and translating different languages. Mr. Small also...more

Faegre Drinker Biddle & Reath LLP

It’s not what happened, but why: First Circuit rejects conclusory, unsupported expert opinions

It is not uncommon for an opposing expert to opine that the existence of injury alone implies negligence, nor is it unusual to find that such opinions are supported only by general reliance on “literature” with no discernible...more

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