September 24, 2026
Willkie partners Craig C. Martin, Matt D. Basil and Katrina Robson contributed a chapter on recent developments in U.S. antitrust enforcement to the 2026 edition of the Chambers Antitrust Litigation guide.
The chapter focuses on the recent resurgence of state antitrust regimes in response to lighter federal enforcement, highlighting the need for businesses to stay alert to regulatory actions and legislative efforts at the state level to minimize antitrust risks. The piece discusses the history of state and federal antitrust authority, the dynamics behind the current shift, and the salient lawsuits and legislation in Illinois and beyond.
Craig C. Martin, Chairman, Americas, and a member of Willkie’s Executive Committee, is widely recognized as a “courtroom to boardroom” lawyer who represents clients in their most important strategic, reputational, and economic matters.
Matt D. Basil is a leading litigator who regularly represents Fortune 500 companies in a wide array of commercial disputes and class actions, particularly complex contract, antitrust, financial and fraud litigation.
Katrina Robson leads Willkie’s Antitrust & Competition team in Washington, DC. Recognized as one of the country’s top antitrust litigators, she has tried some of the most significant antitrust disputes in recent years, including historic cases related to clearance for multibillion-dollar mergers.
Willkie operates a global antitrust practice with a cohesive team of competition lawyers across the United States and Europe, and connections in Asia, Latin America, and Africa. The practice is consistently recognized for excellence by Chambers and other leading legal directories.
View the full article “Trends and Developments: USA – Illinois” in the Chambers Antitrust Litigation 2026 guide here.
The chapter focuses on the recent resurgence of state antitrust regimes in response to lighter federal enforcement, highlighting the need for businesses to stay alert to regulatory actions and legislative efforts at the state level to minimize antitrust risks. The piece discusses the history of state and federal antitrust authority, the dynamics behind the current shift, and the salient lawsuits and legislation in Illinois and beyond.
Craig C. Martin, Chairman, Americas, and a member of Willkie’s Executive Committee, is widely recognized as a “courtroom to boardroom” lawyer who represents clients in their most important strategic, reputational, and economic matters.
Matt D. Basil is a leading litigator who regularly represents Fortune 500 companies in a wide array of commercial disputes and class actions, particularly complex contract, antitrust, financial and fraud litigation.
Katrina Robson leads Willkie’s Antitrust & Competition team in Washington, DC. Recognized as one of the country’s top antitrust litigators, she has tried some of the most significant antitrust disputes in recent years, including historic cases related to clearance for multibillion-dollar mergers.
Willkie operates a global antitrust practice with a cohesive team of competition lawyers across the United States and Europe, and connections in Asia, Latin America, and Africa. The practice is consistently recognized for excellence by Chambers and other leading legal directories.
View the full article “Trends and Developments: USA – Illinois” in the Chambers Antitrust Litigation 2026 guide here.
