He specializes in complex commercial litigation with emphasis on antitrust litigation. He was named "Antitrust Lawyer of the Year" for 2011 and 2013 by U.S. News & World Report - Best Lawyers, and is one of three antitrust lawyers in Illinois to receive Chambers & Partners' 'tier one' rating. Mr. Eimer has played a principal role in dozens of grand jury investigations and criminal and civil antitrust cases, including several in which he has been national lead counsel for all defendants.