News & Analysis as of

Causation Evidence

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

Bennett Jones LLP

British Columbia Grapples With Evidentiary Issues and the Requirement for a Workable Methodology

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The evidentiary burden on plaintiffs to have a case certified­—i.e., the “some basis in fact” standard—has been described as a “low bar” in countless cases. Plaintiffs cite the “low bar” in trying to certify their cases, and...more

White and Williams LLP

New Jersey Court Pumps the Brakes on Product Liability Lawsuit

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In Wang v. Maserati N. Am., Inc., C.A. No. 23-2402, 2025 U.S. Dist. LEXIS 61446, the United States District Court for the District of New Jersey (District Court) considered the admissibility of the opinions of plaintiffs’...more

Goldberg Segalla

Defendant’s Motion for Summary Judgment Granted Based on Expert Preclusion

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Jurisdiction: United States District Court for the Southern District of New York - Plaintiff Scott Keller alleged that he was exposed to asbestos during his employment on ExxonMobil Oil Company vessels and that he developed...more

Searcy Denney Scarola Barnhart & Shipley

The Importance of Documenting Your Injuries for a Lawsuit

If you have a mass tort lawsuit, proving your injuries (and their costs) will be essential for recovering the financial compensation you deserve. As a result, documenting your injuries is extremely important, and while your...more

ArentFox Schiff

US District Court to Examine Link Between PFAS and Cancer

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Amidst mounting per- and polyfluoroalkyl substances (PFAS) regulation and litigation, the Multidistrict Litigation (MDL) judge overseeing the federal litigation related to firefighting foam has scheduled a “Science Day.”...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

Faegre Drinker Biddle & Reath LLP

Foundation, Not Façade — The Fifth Circuit Affirms the Proper Basis Requirement for Admissibility of Expert Opinions in Newsome v....

In a toxic tort case, plaintiffs must establish general causation. If a substance is incapable of causing the type of injury plaintiff claims, then it certainly didn’t cause theirs. Under Texas law, toxic tort plaintiffs must...more

Husch Blackwell LLP

Washington Court Finds No Take-Home Exposure in Asbestos Bench Trial

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In Perkins v. United States, Plaintiff Tristan Perkins sued the United States under the Federal Tort Claims Act (“FTCA”) for her mother Geraldine Perkins’ (“Decedent”) alleged wrongful death due to asbestos exposure. Alleging...more

Bennett Jones LLP

BC Court Declines to Certify Overdose Prevention Class Action After Finding No Basis in Fact for Causation

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A recent decision from the Supreme Court of British Columbia underscores the Court’s cautious approach to certifying class actions in nuisance cases, particularly when the alleged harm arises from varied and diffuse conduct....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

Faegre Drinker Biddle & Reath LLP

Plaintiff’s Half-Baked Attempt to Prove Defect and Causation With Photographs of Moldy Bread Shows the Knead for Expert Testimony

A picture may be worth a thousand words, but that doesn’t make the camera an expert witness. Product liability actions usually require expert testimony to prove defect and causation. Pictures, like other documents, can be...more

Faegre Drinker Biddle & Reath LLP

Third Circuit Affirms Lone Pine Order and Ensuing Dismissals in In re Zostavax MDL

In March 2022, the In re Zostavax MDL court entered a Lone Pine order requiring plaintiffs who claimed to have developed shingles as a result of using the Zostavax vaccine to produce certain test results supporting causation....more

Faegre Drinker Biddle & Reath LLP

California Supreme Court Walks Middle Ground on Warnings Causation but Reaffirms Learned Intermediary Doctrine in Himes

As we reported in April, the United States Court of Appeals for the Ninth Circuit certified a question on California’s Learned Intermediary Doctrine in Himes v. Somatics, LLC, 2022 WL 989469 (9th Cir. Apr. 1, 2022). The...more

Faegre Drinker Biddle & Reath LLP

Expert’s Results-Driven Methodology Leads to Exclusion and Summary Judgment in Paraquat MDL

An expert witness is not supposed to pick a desired result and then reverse engineer inputs and methods that reach that result. As the Ninth Circuit observed 30 years ago, “[c]oming to a firm conclusion first and then doing...more

CDF Labor Law LLP

A New and Challenging Obstacle for California Employers’ Use of Experts in State Courts

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Employers litigating cases in California courts face many obstacles. Summary judgment has become increasingly difficult for employers. Criminal cases take precedent and often cause trial postponements, resulting in civil...more

Husch Blackwell LLP

IPSE DIXIT: Because My Patient Said So – How to Challenge Medical Experts Who Base an Opinion of Injury Causation Solely on a...

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Plaintiffs often disclose medical experts to opine not only as to the diagnosis or prognosis of an injury or medical condition, but also as to whether the defendant’s actions caused plaintiff’s alleged injury/condition. In...more

Nossaman LLP

Regarding landslide liability, the Court is not interested in the “Chicken or Egg” debate

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With the frequency of wildfires and flooding, landslides are becoming more frequent throughout California.  When public agencies have water pipelines located in hillsides, the situation presents the classic “chicken or egg”...more

Haight Brown & Bonesteel LLP

New Law Raises Standard for Defense Experts as to Medical Causation

On July 17, 2023, California Governor Gavin Newsom signed Senate Bill (SB) No. 652, adding Section 801.1 to the California Evidence Code. This section provides additional requirements for expert opinions relating to medical...more

Goldberg Segalla

Engine Company’s Motion to Renew Summary Judgment on Causation Grounds Denied

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Supreme Court of New York, Nassau County - Defendant Perkins Engine, Inc. moved to renew a court order denying its motion for summary judgment. A motion for leave to renew or reargue is based on new facts not offered on...more

Harris Beach Murtha PLLC

National Mass Torts: 2022 Year in Review

Harris Beach attorneys Abbie Eliasberg Fuchs, Bradley M. Wanner and Daniel R. Strecker review and analyze key judicial holdings and legal developments in New York, the federal arena and across the country that have affected...more

Faegre Drinker Biddle & Reath LLP

Experts’ Disagreement with Medical Literature Leads to Exclusion

Peer-reviewed literature can be a powerful tool in attacking an opposing expert’s opinions. A solid, on-point article can do more than merely satisfy several of the so-called Daubert factors for assessing reliability – by...more

Faegre Drinker Biddle & Reath LLP

Ipse Dixit – It’s Not Just for Analytical Gaps Anymore

There are few legal phrases more fun to say than “ipse dixit.” The phrase is most commonly used in motions to exclude experts who base their opinions on nothing more than their own say so...more

Faegre Drinker Biddle & Reath LLP

Pathologist Stopped Short of Offering Could-Have, Should-Have Opinions

In personal injury and wrongful death cases, the plaintiff bears the burden of proving medical causation, which almost universally requires testimony from a competent expert.  Some plaintiffs offer testimony from forensic...more

Faegre Drinker Biddle & Reath LLP

Ninth Circuit Affirms Exclusion of Expert and Resulting Summary Judgment in In re: Incretin-Based Therapies MDL

Early last year, the In re: Incretin-Based Therapies MDL court held that the plaintiffs’ warnings claims were preempted, excluded plaintiffs’ general causation experts, and granted summary judgment to all defendants on dual...more

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