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Semien et al v. PubMatic Inc.
Case Number:
3:25-cv-03164
Court:
Nature of Suit:
Multi Party Litigation:
Class Action
Judge:
Firms
Companies
Sectors & Industries:
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January 29, 2026
PubMatic Fails To Score Complete Dismissal Of Privacy Suit
A California federal judge has largely refused to dismiss a proposed class action that accuses digital advertising firm PubMatic Inc. of secretly tracking internet users across the web and selling their data, with the judge allowing most privacy and wiretapping claims to move forward.
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April 10, 2025
Online Advertising Co. Is Sued Over Use Of Tracking Cookies
Digital advertising firm PubMatic Inc. engaged in vast and unauthorized tracking of the online lives of "hundreds of millions of Americans," which it later shared and sold to third parties, violating state and federal privacy laws, according to a proposed class action filed in California federal court.