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Michael Sennett (Mike)
Of Counsel


(T) +1.312.269.4243
(F) +1.312.782.8585


  • Loyola University Chicago (J.D. cum laude 1977; Executive Editor, Law Journal); Quincy University (A.B. with honors 1973)

Bar Admissions

  • Illinois; U.S. Supreme Court; U.S. Courts of Appeals for the Second, Third, Fifth, Seventh, Eighth, Ninth, Tenth, Eleventh, District of Columbia, and Federal Circuits; U.S. District Courts for the Northern District of Illinois (Trial Bar) and Eastern District of Wisconsin; and pro hac vice in numerous federal and state courts

Mike Sennett practices antitrust law with an emphasis on the antitrust aspects of mergers, acquisitions, and joint ventures; antitrust litigation; civil investigations before the United States Department of Justice, the Federal Trade Commission, and state attorneys general; and criminal and cartel antitrust matters, including grand jury proceedings. He handles complex antitrust cases in courts throughout the United States, including before the Judicial Panel on Multidistrict Litigation, and antitrust enforcement matters with the competition agencies. He also counsels clients on the antitrust aspects of intellectual property licensing and related patent matters, strategic alliances and collaborations, pricing and price discrimination, distribution, advertising and marketing practices, as well as Hatch-Waxman Act strategies.

Mike serves as antitrust counsel to a number of multinational corporations and businesses operating domestically and globally. His industry experience includes pharmaceuticals, biotechnologies, medical devices, pharmaceutical benefit services, steel, automotive, building products, farm equipment, consumer products, mining, water and wastewater technologies and services, health care services, transportation, financial services, and communications. Representative corporate clients include Astellas Pharma, Baxalta, Baxter International, Boehringer Ingelheim, Cardinal Health, CVS Caremark, Edwards Lifesciences, Fortune Brands Home & Security, and Potash Corporation of Saskatchewan.

Mike is on the adjunct law faculty at Loyola University Chicago where he teaches antitrust law. He is a member of the board of advisors of the Institute for Consumer Antitrust Law Studies and the Midwest Antitrust Colloquium. He has written extensively on antitrust law matters for academic and trade journals and delivered addresses on competition issues for conferences in the U.S. and abroad.

Honors & Distinctions

  • Named a leading antitrust lawyer in:

    Chambers USA — antitrust (2005-2016)

    Chambers Global — antitrust (2012-2016)

    The International Who's Who of Competition Lawyers and Economists (2006-2015)

    The Guide to the World's Leading Competition and Antitrust Lawyers (2006-2015)

    Legal 500 US (2013-2014)

    The Best Lawyers in America — antitrust (2006-2016)

    Illinois Super Lawyers — antitrust (2005-2016)

    Who's Who Legal: Life Sciences (2015-2016)
Michael Sennett Mike