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Class Action Class Certification Evidence

A class action is a type of legal action where a representative individual or group of individuals can bring a claim on behalf of a larger group or class who share a common legal interest.
Alston & Bird

Class Action & MDL Roundup 2024 Q4 – We Give You the Benefit of the Bargain

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Welcome back to the Class Action & MDL Roundup! This edition covers notable class actions from the fourth quarter of 2024. In this edition, an overdue audiobook suit is shelved, an old case gets new reps and new...more

Venable LLP

Supreme Court Grants Certiorari on Important Class Certification Standards

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The United States Supreme Court has granted certiorari in Laboratory Corporation of America Holdings v. Davis. The case raises a pivotal question: Can a federal court certify a Rule 23(b)(3) damages class when some proposed...more

BakerHostetler

Article III and Rule 23: Fourth Circuit Holds That Individualized Article III Issues Preclude Class Certification

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For many causes of action, a plaintiff is required to establish an actual “injury” caused by the alleged violation of law. That requirement can be a powerful barrier to class certification if individualized factual inquiries...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

Kilpatrick

Eighth Circuit concludes that admissibility at class certification is a “red-herring”

Kilpatrick on

In Cody v. City of St. Louis, 103 F.4th 523 (8th Cir. 2024), the Eight Circuit maintained its position that admissibility standards do not apply strictly at the class certification stage, thereby solidifying a circuit split...more

Stikeman Elliott LLP

Jensen v. Samsung: Federal Court of Appeal Confirms Evidentiary Requirement More Than “Mere Formality”

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In Jensen v. Samsung Electronics Co. Ltd., 2023 FCA 89, the Federal Court of Appeal (the “Court”) upheld the lower court’s refusal to certify a proposed class action involving allegations that the defendants had breached...more

Blake, Cassels & Graydon LLP

Un tribunal canadien radie un rapport d’expert et refuse d’autoriser une action collective contre des sociétés pharmaceutiques

L’Institut canadien d’information juridique a publié récemment une décision clé en matière d’action collective qui est passée sous le radar. Dans l’affaire Graham et al v. Hoffmann-La Roche Limited et al. (l’« affaire Graham...more

Blake, Cassels & Graydon LLP

Canadian Court Strikes Plaintiffs’ Expert Evidence, Denies Certification of Pharmaceutical Class Act

The Canadian Legal Information Institute recently published an overlooked but important class action decision of the Saskatchewan Court of King’s Bench (Court) in Graham et al. v. Hoffmann-La Roche Limited et al. (Graham)....more

Robinson+Cole Class Actions Insider

Ninth Circuit Reiterates That Individualized Defenses Matter When Deciding Class Certification

A recent Ninth Circuit decision illustrates how defendants can use evidence on an individualized defense to potentially defeat class certification. In Van v. LLR, Inc., — F.4th –, 2023 WL 2469909 (9th Cir. Mar. 13, 2023),...more

Faegre Drinker Biddle & Reath LLP

Listen Up Class: The Role of Daubert at the Class Certification Stage in the Ninth Circuit

Class certification is the feature fight of any putative class action lawsuit. If granted, it can multiply the stakes of a case several hundred- or thousand-fold. If denied, it can signal the end of the litigation. Because of...more

Robinson+Cole Class Actions Insider

Third Circuit Maintains a Strict Approach to Numerosity and Highlights Circuit Split on Application of Evidentiary Rules to Class...

I used to say that denials of class certification on numerosity grounds were rare and that usually it was futile to oppose class certification on that ground. That’s becoming less true as some circuits, including the Third...more

Akin Gump Strauss Hauer & Feld LLP

9th Circuit Provides Key Guidance for Defendants Opposing Rule 23(b)(3) Class Actions

Key Points - The en banc 9th Circuit clarified numerous rules applicable to class actions brought under Rule 23(b)(3) of the Federal Rules of Civil Procedure. The court’s watershed decision in Olean Wholesale Grocery v....more

McGuireWoods LLP

Northern District of Ohio Holds Expert Evidence Must Be Admissible to Be Considered at Class Certification

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As we touched on last summer, whether a district court may certify a class action without resolving challenges to the admissibility of fact or expert evidence is still an unsettled question. This question is particularly...more

Robinson+Cole Class Actions Insider

Recent First Circuit Opinion Addresses Strategies for Litigating Predominance in Class Action Litigation

On August 30, 2021, the U.S. Court of Appeals for the First Circuit issued a decision in Bais Yaakov of Spring Valley v. ACT, Inc. that addresses how plaintiffs can satisfy the predominance requirement in federal class...more

Goodwin

Eighth Circuit Overturns Class Certification in Suit Against TD Ameritrade Holding Corp., Holding Individualized Evidence Is...

Goodwin on

Eighth Circuit Overturns Class Certification in Suit Against TD Ameritrade Holding Corp., Holding Individualized Evidence is Required for Each Putative Class Member; District Judge Approves Magistrate’s Recommendation to Deny...more

McGuireWoods LLP

Ninth Circuit Stresses District Court’s Duty to Weigh Competing Expert Evidence at Class Certification

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The Court of Appeals for the Ninth Circuit issued a decision recently in Olean Wholesale Grocery Cooperative, Inc. v. Bumble Bee Foods LLC (“Olean Wholesale”), confirming that district courts must rigorously examine competing...more

Foley & Lardner LLP

Sixth Circuit Holds Non-Expert Evidence Need Not Be Admissible to Support Class Certification, but Approves Stringent Claim...

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At Class Certification Stage, Non-Expert Evidence Must Be Reliable, but Not Necessarily Admissible: As the Supreme Court explained 40 years ago in General Telephone Co. of Southwest v. Falcon, 457 U.S. 147, 161 (1982),...more

McGuireWoods LLP

Sixth Circuit Holds Class Certification Evidence Does Not Have to be Admissible

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The Sixth Circuit Court of Appeals’ recent opinion in Lyngaas v. Curaden AG (“Lyngaas”), has important implications for federal class actions regarding personal jurisdiction and the use of non-admissible evidence to support...more

Kilpatrick

Third Circuit weakens ascertainability requirement by lowering evidentiary bar

Kilpatrick on

Takeaway: The Circuits have split on the issue of whether a class representative must show the class is “ascertainable.” The Third Circuit has required a Rule 23(b)(3) class to be “currently and readily ascertainable.” ...more

Kilpatrick

E.D.N.Y.: Class certification evidence must be admissible

Kilpatrick on

Takeaway: In a prior post, we reported on the Ninth Circuit’s decision in Sali v. Corona Regional Medical Center, 889 F.3d 623 (9th Cir. 2018) that class certification evidence need not be admissible (Ninth Circuit deepens...more

Carlton Fields

Hearsay What? EDNY Finds That Class Certification Evidence Must Be Admissible

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Lin v. Everyday Beauty is an Eastern District of New York decision addressing an issue that has divided district courts in the Second Circuit and elsewhere: Whether a federal court may consider inadmissible evidence when...more

McDermott Will & Emery

[Event] Wage The Battle To Win The War: Expert Challenges At Class Certification - September 24th, Chicago, Illinois

Certifying an antitrust class under Rule 23 has become a battle. In the last 20 years, courts have been changing the game around Rule 23 interpretation, and rigorous analysis at class certification has made briefing...more

Faegre Drinker Biddle & Reath LLP

Beware of the “Influencer”

The proliferation of social media has transformed the world in many ways including how people communicate, becoming a preferred vehicle for political discourse and an important source of information in litigation. It has also...more

Womble Bond Dickinson

Class Certification Ruling Shows TCPA Perils Involved With Online Lead Generation

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From the perspective of a litigator and trial lawyer, the online lead generation supply chain gives me heartburn sometimes. The problem is one of evidence. In the world of online lead generation and digital marketing, the...more

Bennett Jones LLP

Looking Forward Class Actions in 2019

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For the last six years, the Bennett Jones Class Actions Practice Group has published an annual year-in-review: our attempt to recap some highlights in class action litigation over the last year and make some soft predictions...more

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