Class Action Class Certification Expert Testimony

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.
News & Analysis as of

Algarin v. Maybelline: Survey Evidence of Purchaser Behavior Defeats Class Certification

A recent decision by a California federal judge highlights the important role that expert testimony and evidence can play in defeating a bid for class certification. On May 12, 2014, Judge Anthony Battaglia of the Southern...more

En Banc Ninth Circuit Demands That Courts Serve As Gatekeepers For Expert Testimony — Will That Rule Be Extended to Class Actions?...

In the battle over class certification, expert testimony proffered by both plaintiffs and defendants is playing an increasingly important role. The Supreme Court has not yet decided whether the test for admissibility of...more

Strategies In Class Action Engagement: Third-Party Depositions, Part B

This continues our series of blog posts on effective partnering between inside and outside counsel to defend against class action lawsuits. Here, we focus on the uses of expert testimony. The Role of the Expert at the...more

Strategies In Class Action Engagement: Third-Party Depositions

This continues our series of blog posts on effective partnering between inside and outside counsel to defend against class action lawsuits. Here, we begin a discussion of the use of expert testimony. Occasionally,...more

Recent Supreme Court Rulings on Class Actions

The Supreme Court continued to focus on class action litigation during this term, handing down a number of significant rulings relating to jurisdiction, class certification, and arbitration of putative class claims. The many...more

Data Breach Class Actions Can't Survive Certification Without Expert Testimony On Classwide Damages

This is the latest opinion in the ongoing litigation arising out of a massive data breach suffered by Hannaford Bros. grocery stores. In re Hannaford Bros. Privacy Litigation, __F. Supp. 2d __, Case No. 2:08-MD-1954-DBH, 2013...more

Supreme Court Directs Trial Courts To Look At The Merits In Determining Whether To Certify A Class

Comcast v Behrend is the latest in a series of United States Supreme Court cases in recent years that have restricted the ability of plaintiffs to certify federal class actions. In so doing, it has expanded the scope of the...more

Comcast Corp. v. Behrend: Even More Than Meets the Eye?

On Wednesday, the United States Supreme Court handed down its opinion in another of this term’s major class action cases. Following on the heels of Standard Fire Insurance Co. v. Knowles, where the Court closed a loophole...more

Supreme Court Comcast Decision Makes Antitrust Class Action Certification More Difficult

The Supreme Court’s decision in Comcast Corporation v. Behrend, an antitrust case involving a class of more than two million current and former cable television subscribers in the Philadelphia area, raises the bar for...more

Common and Predominating Damages: Comcast Opinion Extends Wal-Mart v. Dukes' Standards for Class Certification but Leaves the...

On March 27, 2013, the U.S. Supreme Court decided Comcast Corp. v. Behrend, Case No. 11-864, which provides a valuable tool for the defense in combatting class certification in antitrust cases and other types of class...more

Behrend and Amgen: The Supreme Court Sends Mixed Signals About Reaching the Merits at the Class Certification Stage

The U.S. Supreme Court has sent mixed signals this term regarding when courts can address merits issues at the class certification stage. On March 27, 2013, in Comcast Corp. v. Behrend, the Court reaffirmed that lower courts...more

Supreme Court Requires Proof at Certification Stage that Damages Can Be Measured on Class-Wide Basis

In a 5-4 decision, the Supreme Court decided earlier this week that putative class plaintiffs could not bring a class action antitrust lawsuit unless they could show that their damages could be measured on a class-wide basis....more

Supreme Court Rules That District Court Must Rigorously Review Plaintiffs’ Damages Model at Class Certification Stage

The Supreme Court this week in Comcast Corp. v. Behrend forcefully reiterated that Rule 23(b)(3) requires the district court to engage in rigorous review to ensure that damages are capable of measurement on a classwide basis,...more

Cables Sliced on Class Action in Comcast Corp. v. Behrend

Key Points - - Comcast Corp. v. Behrend clarifies that the Court's 2011 decision in Wal-Mart v. Dukes, which requires an inquiry into the merits to the extent necessary to resolve Rule 23 issues, extends to antitrust...more

Comcast v. Behrend: Supreme Court Tightens Certification Requirements, But Leaves Standard For Expert Evidence Uncertain

On March 27, 2013, the U.S. Supreme Court decided Comcast Corp. v. Behrend, Case No. 11-864, which tightened class certification requirements in two respects. First, Behrend requires plaintiffs to show a method by which...more

Supreme Court Raises The Bar For Class Actions

Today the U.S. Supreme Court rendered a pivotal decision, holding that as a prerequisite for certification of a class action, a plaintiff must introduce admissible evidence to show that the case is susceptible to awarding...more

Defending Commercial Class Actions: Recent Cases May be Giving the Defense an Edge

While the ripples from the United States Supreme Court’s 2011 decision in Wal-Mart v. Dukes are still being felt, the Court may make further class action waves this term with its pending decision in Comcast v. Behrend. This...more

Federal Court Denies Class Certification After Daubert Analysis

A federal court late last month declined to certify three classes of consumers in litigation claiming that a defect in Harley-Davidson Motor Co. Inc.'s motorcycles caused severe wobbling and instability. See Steven C....more

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