Milton A. Marquis


Milton Marquis is a member of the State Attorneys General Practice and has developed an active antitrust and consumer protection litigation practice. He served with the government for 14 years at the U.S. Department of Justice and the offices of the attorneys general of Virginia and Massachusetts. In private practice, Milton has represented major companies on a wide range of antitrust and consumer protection investigations and litigations involving state attorneys general across the United States, as well as the Federal Trade Commission and U.S. Department of Justice.

Marquis has an active antitrust and consumer protection counseling practice, advising companies on related compliance issues. He also regularly advises clients on potential acquisitions from an antitrust perspective. Milton has advised companies through all stages of the Hart-Scott-Rodino premerger notification process, including Harbour Group and Gladstone Corporation.

Marquis served as senior counsel to the assistant attorney general for antitrust, U.S. Department of Justice, during the Clinton administration. In this capacity, he advised the assistant attorney general on a wide range of issues, including energy and health care. Milton served as the Antitrust Division’s first liaison to state attorneys general. Prior to his service at the Justice Department, Milton served as an antitrust and consumer protection litigator in the offices of the attorneys general of Massachusetts and Virginia, where he handled litigations and investigations involving many industries, including soft drink, automobile, retail, agriculture, health care and waste disposal. During his tenure as a state antitrust prosecutor, Marquis was a leading member of the Multistate Antitrust Task Force of the National Association of Attorneys General.

Marquis has served in various leadership positions in the Section of Antitrust Law of the American Bar Association, including chair of the Civil Litigation and Procedure Committee, and vice chair of the Corporate Counseling Committee. He also is a long-time member of the National Bar Association.