Stephen Chuk is a Partner in Proskauer’s Antitrust and Sports Groups, representing clients in their most high-stakes antitrust and competition matters. A trusted advisor to general counsel and senior executives, he regularly defends clients facing criminal and regulatory investigations by the U.S. Department of Justice, Federal Trade Commission, and state attorneys general.

Stephen has defended clients against allegations of price fixing, monopolization, group boycott and bid rigging, managing sophisticated antitrust disputes from inception through trial. In 2023, he was a lead member of the trial team that secured a landmark defense victory for Sanderson Farms, defeating $7 billion in damages claims after a six-week jury trial in the U.S. District Court for the Northern District of Illinois.

His accomplishments have earned him recognition as one of the leading young antitrust litigators in the country. Most recently, Stephen was selected as a Rising Star by Law360, named to Benchmark Litigation’s “40 & Under List” and recognized in Best Lawyers: Ones to Watch in America for 2026.

In addition to his antitrust work, Stephen counsels clients on consumer protection and marketing practices, including false advertising disputes. He has handled precedent-setting matters before the FTC and state attorneys general, giving him valuable insight into the intersection of competition and consumer protection enforcement and enabling him to equip clients with practical, business-focused strategies to manage overlapping risks.