Leo Caseria

Professional Biography

Leo Caseria is a partner in the Antitrust and Competition Practice Group in the Washington, D.C. and Los Angeles offices. 

Areas of Practice

Leo advises companies on antitrust issues in civil litigation, government investigations, mergers and acquisitions and proposed or contemplated business strategies. He has litigated numerous antitrust cases in federal and state courts, including cases based on alleged price-fixing, market allocation, boycott, monopolization and attempted monopolization.  He also has experience in consumer protection issues relating to price gouging.

Leo has obtained orders from several courts dismissing or significantly limiting antitrust claims against clients in industries such as automotive data management systems, consumer telescopes, consumer electronics and cement and concrete.  His antitrust litigation experience includes trial and appeal.

Leo is also knowledgeable regarding price gouging laws.  He has led the defense of several companies targeted in price gouging investigations by state attorneys general or local district attorneys in multiple states.  The products involved in the investigations Leo has handled include food, water, and consumer goods.

In addition, Leo regularly advises companies regarding the requirements under the Hart-Scott-Rodino (HSR) Act, prepares numerous HSR filings and works with economists to prepare submissions and presentations to government antitrust enforcers regarding proposed transactions. Leo represents clients before the U.S. Department of Justice and the Federal Trade Commission in connection with government antitrust investigations. 

Leo serves as Co-Chair of the Books and Treatises Committee of the American Bar Association's Section of Antitrust Law. He frequently edits or contributes to the Section’s antitrust handbooks, and also authored articles for SCOTUSblog and the New York Law Journal. He has been recognized as a "Rising Star" by Super Lawyers and in Legal 500.

  • More Legal and Business Bylines From Leo Caseria


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