Milton A. Marquis

Milton A. Marquis


Cozen O'Connor

Recognized since 2019

Washington, District of Columbia

Practice Areas

Litigation - Antitrust

Navigate to map location for Milton A. Marquis
Spinning circle Big letter B

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.Milton 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.Milton 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 the soft drink, automobile, retail, agriculture, health care and waste disposal industries. During his tenure as a state antitrust prosecutor, Milton was a leading member of the Multistate Antitrust Task Force of the National Association of Attorneys General.Milton 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 currently serves on the Advisory Board of the American Antitrust Institute. He also is a long-time member of the National Bar Association

Location
  • 1200 Nineteenth Street, NW, Third Floor
    Washington, DC 20036
Education
  • Case Western Reserve University, J.D. , graduated 1984
  • University of Georgia, B.A. , graduated 1979
Bar Admissions
  • District of Columbia, District of Columbia Bar

Cozen O'Connor
Headquarters: Philadelphia, Pennsylvania

156 The Best Lawyers in America® awards

92 Best Lawyers: Ones to Watch® in America awards

Visit Website View Firm Profile

Recognized in The Best Lawyers in America® 2025 for work in:
  • Litigation - Antitrust
Special Focus:
  • Complex Disputes
  • State Government Litigation
Additional Areas of Practice:
  • Administrative / Regulatory Law
  • Antitrust Law
  • Arbitration
  • Consumer Protection Law
  • Government Relations Practice
  • Mediation

Publications

Your browser is not fully compatible with our automatic printer friendly formatting.

Please use the print button to print this profile page.

Spinning circle Big letter B