Thomas Undlin

Antitrust and Trade Regulation; Business Litigation; Class Action Litigation; Intellectual Property and Technology Litigation; Domestic and International Arbitration; Financial Markets Litigation

Thomas J. Undlin has experience in an array of complex business disputes including antitrust, breach-of-contract, fraud, securities, and intellectual property claims. He has practiced in a wide range of jurisdictions including state and federal courts in Minnesota, Wisconsin, Illinois, New York, Texas, and California, as well as varied sponsoring agencies for both domestic and international arbitration and dispute resolution.

As co-lead counsel, Mr. Undlin played a key role in a class action suit against some of the world’s largest private equity firms for a conspiracy to suppress the buyout price for public companies, with total settlements of nearly $600 million. Since its inception in 2005, Mr. Undlin has served as co-lead counsel in In re Payment Card Interchange Fee and Merchant Discount Litigation, resulting in a landmark $6.26 billion class settlement, the largest of its kind in the history of the Sherman Act. He is currently lead liaison counsel in In re Cattle and Beef Antitrust Litigation, in which plaintiffs allege that some of the country’s largest meatpacking companies colluded to suppress the price they paid to ranchers and feedlot owners for cattle used in beef production.

In 2020 and 2021, Benchmark Litigation named Mr. Undlin a “Litigation Star.”