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Class Certification Sherman Act Antitrust Violations

Zelle  LLP

Judge Donato Excludes Expert Opinion Testimony, Denies Class Certification in Klein V. Meta

Zelle LLP on

On January 24, 2025, Judge Donato granted Meta’s motion to exclude the opinions of user plaintiffs’ expert on antitrust injury. Finding that the class certification motion depended on the expert opinions offered by Dr....more

Brownstein Hyatt Farber Schreck

Illinois District Court Issues Important Class Certification Decision in a Section 1 Antitrust Case

On July 22, 2024, Judge Rebecca R. Pallmeyer of the Northern District of Illinois issued a Memorandum Opinion and Order (“Opinion”), ultimately ruling to certify a class of vendors that provide back-end software to many of...more

Carlton Fields

Rough Waters in the Expert “Hot Tub” - Court Throws Class Expert Overboard in Google Play Store Litigation

Carlton Fields on

One notable opportunity associated with antitrust class action practice is the expert “hot tub,” which generally speaking is an in-court, on-the-record “debate” between dueling economists, with the court, parties, and experts...more

Mintz

Antitrust Case Against BCBS to Continue Under Per Se Standard

Mintz on

In a long-running antitrust case, the Eleventh Circuit recently denied defendant Blue Cross Blue Shield’s interlocutory appeal of the district court’s ruling that certain allegedly restrictive practices of defendants must be...more

Patterson Belknap Webb & Tyler LLP

Expert Analysis Guides Decision to Certify Class of Automotive Part Purchasers

Certifying a class of direct purchasers of sheet metal parts alleging claims under section 1 of the Sherman Act, Judge Lynn Adelman of the United States District Court for the Eastern District of Wisconsin focused on what it...more

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