Leslie A. Barry

Leslie A. Barry is a Partner at Dentons and a member of the firm’s Litigation and Dispute Resolution practice and Competition and Antitrust group, focusing on Competition Law. She concentrates her practice in antitrust and competition litigation and compliance.

She represents clients from around the world and helps them navigate complex, multi-district civil class actions involving federal and state antitrust issues. She also advises clients on pre-suit matters, including antitrust compliance, antitrust risks and mitigating those risks, and counsels clients on day-to-day operations and developing antitrust policies, guidelines and training materials. She advises clients on government investigations at the state, federal and international levels.

Leslie also has significant experience in complex commercial civil litigation in federal and state courts, covering a wide range of matters including health care litigation, government and internal investigations, breach of contract actions and business torts. She has broad experience handling all aspects of litigation, from pre-suit investigations to discovery, motion practice, trial, mediations and arbitrations.

Her representative antitrust matters include representing Farbest Foods, Inc. in Olean Wholesale Grocery Cooperative v. Agri Stats and Sandee’s Catering v. Agri Stats, multi-defendant class actions alleging unlawful information exchange and price fixing in the turkey industry in violation of the Sherman Antitrust Act and multiple state antitrust acts; representing Shinyei Kaisha, Shinyei Technology Co., Ltd., Shinyei Capacitor Co. and Shinyei Corporation of America in Chip-Tech, Ltd. v. Panasonic Corporation and In re Capacitors Antitrust Litigation, involving international price-fixing allegations in the capacitors industry; and representing a private equity firm against federal antitrust claims involving allegations of conspiracy and monopolization in the advertising placement industry, with all claims against the client dropped following a motion to dismiss.

Her representative commercial litigation matters include representing hospitals, health care systems and other entities in government-driven and internal investigations and alleged violations of the False Claims Act, including qui tam and whistleblower actions and alleged violations of the Stark Law and Anti-Kickback Statute; representing a Medicare Part D Plan in its fraud and breach of contract action against its former pharmacy benefits manager; and representing a former Medicaid fiscal intermediary in State of Louisiana v. Molina Healthcare Inc.

She is recognised in The Best Lawyers in America, Ones to Watch, for Commercial Litigation (2024–2025). Her practice areas include arbitration, commercial litigation, competition and antitrust, competition and antitrust counseling and compliance, global compliance and investigations, educational institutions, health care, industrial production, life sciences, litigation and dispute resolution, and technology. She holds a JD, with distinction, from The University of Iowa College of Law (2012), where she was Note and Comment editor of the Iowa Law Review, and a BA, magna cum laude, from Carleton College (2005). She is a member of the American Bar Association, its Section of Antitrust Law, and the Ohio Bar Association.