News & Analysis as of

Expert Testimony Federal Rules of Civil Procedure

Robinson Bradshaw

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

Robinson Bradshaw on

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

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

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

Knobbe Martens on

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

Montgomery McCracken on

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?

Verrill on

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

Morgan Lewis on

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?

Foley & Lardner LLP on

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?

Zuckerman Spaeder LLP on

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

Zelle LLP on

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...

Jenner & Block on

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

White and Williams LLP on

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

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

Morrison & Foerster LLP - Federal Circuitry

Last Week in the Federal Circuit (August 23-27): Supporting Damages Expert’s Testimony

With Labor Day around the corner and summer coming to a close, the Federal Circuit had a busy week with a lot of precedential opinions to pick from. Below we provide our usual weekly statistics and our case of the week—our...more

Nutter McClennen & Fish LLP

Practice Pointer: Under Massachusetts Procedure, There’s No Right to Expert Depositions

Under Massachusetts procedure, a party has the right to compel an opponent to disclose its testifying expert’s opinions through interrogatories. But unlike federal procedure, a party under Massachusetts procedure must obtain...more

Butler Snow LLP

Expert Disclosures: Navigating the Distinction Between Retained and Non-Retained Experts

Butler Snow LLP on

In 2010, Fed. R. Civ. P. 26 was amended to require full expert reports and other disclosures for retained expert witnesses, but only summaries of anticipated opinion testimony of non-retained experts. During the ensuing nine...more

Butler Snow LLP

Pro Te: Solutio – Vol. 12, No. 3

Butler Snow LLP on

Summer is winding down, and Fall texted to say she is on her way. This means that Pro Te: Solutio is returning for its third edition of 2019. As always, our authors have taken the time to research and address current issues...more

Bradley Arant Boult Cummings LLP

Expert Witness Research Tips - DRI: Raising the Bar

When it comes to expert witnesses, young lawyers can add tremendous value to their team through research into the background of both their own and the opposing party’s experts. This research should be done as early as...more

Sands Anderson PC

Experts and Defenses in Legal Malpractice Cases: Virginia Supreme Court Sheds Some Important Light

Sands Anderson PC on

Last week, in Sere v. Trapeni, the Virginia Supreme Court handed down a very interesting opinion in a legal malpractice appeal. The Court provided important guidance on when a court’s previous rulings can affect new cases and...more

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