PubMatic, Inc. has filed a lawsuit against Google in U.S. District Court, seeking financial damages and to restore fair competition, alleging years of monopolistic and anticompetitive behavior by Google in digital advertising markets.

Digital Advertising Market Faces Heightened Scrutiny as PubMatic Sues Google

In a significant development for the digital advertising sector, PubMatic, Inc. (Nasdaq: PUBM) has filed a comprehensive antitrust lawsuit against Google (Nasdaq: GOOG, GOOGL) in the U.S. District Court for the Eastern District of Virginia. The lawsuit seeks financial damages and aims to restore fair competition, citing what PubMatic describes as years of monopolistic and anticompetitive behavior by Google in the digital advertising markets.

The Event in Detail: Allegations of Monopoly and Financial Harm

This legal action follows an April 2025 U.S. District Court ruling that determined Google illegally acquired and maintained monopoly power in the publisher ad server and ad exchange markets for open-web display advertising. PubMatic’s complaint builds on these findings, alleging that Google’s actions directly impacted its market share and revenue growth, causing substantial financial harm.

The lawsuit details a period of significant distress for PubMatic, including a workforce reduction of over 40% between November 2015 and November 2016, during which its revenue declined by approximately 8%. The impact of Google’s alleged anticompetitive initiative,