Chicago attorney Mary Kostopoulos

Mary Kostopoulos

Senior Attorney

Phone:   (630) 434-0400 ext. 110

Direct Line:   (630) 810-8882

Fax:   (630) 434-0444

  Send an Email   Download vCard

Mary Kostopoulos is an attorney in Momkus McCluskey Roberts LLC's Business Law Group. Mary works closely with clients to structure, negotiate and implement a wide range of transactions. Mary focuses on mergers and acquisitions, joint ventures, financing transactions, employment and severance negotiations, and outside general counsel services, including conducting internal legal audits, advising on commercial transactions, and addressing compliance requirements.

Mary also advises clients on international trade matters, including addressing import requirements and complying with export controls. Mary reviews client import and export documents, advises as to potential liabilities, assists clients in addressing such risks and writes compliance manuals. Mary advocates for clients before various federal agencies, including the U.S. Customs and Border Protection. 

Mary Kostopoulos on Life, Optimized by Dignitas from Life, Optimized by Dignitas.

Bar Admissions

  • Illinois, 2002
  • Washington D.C., 2003
  • New York, 2008


  • Washington College of Law, American University, 2002
    • J.D.
  • School of International Services, American University, 2003
    • M.A.
  • University of Chicago, Chicago, IL, 1998
    • B.A.

Professional Associations and Memberships

  • University of Chicago Alumni Law Society
    • Founder, National Vice President, and Chicago Chair
  • Chicago Bar Association
    • Corporate Law, International Trade Law and Alliance for Women Committees
  • BLN Chicago
    • Member


  • Trade Law 101: What Every Non-Trade Lawyer Should Know about Trade, The Journal of the DuPage County Bar Association, Vol. 25 (2012-13)

Bar Admissions

  • Illlinois, New York, District of Columbia


  • Seminar presentation on “Import and Export Law 101″ 
    • Presented to the DuPage County Bar Association Business Law Practice Committee September 6, 2012
  • Featured in Dignitas' Life Optimized video series speaking on the role of Outside General Counsel
  • Dignitas is a leading multi-family office, business advisory and investment consulting firm in Chicago

Past Employment Positions

  • Moses & Singer, LLP, New York, New York, 2005 – 2011
    • Associate
  • Deloitte Tax LLP, Chicago, IL, 2004 – 2005
    • Senior Consultant
  • U.S. Customs and Border Protection, Office of International Trade, Regulations & Ruling, Department of Homeland Security, Washington DC, 2002-2005
    • Attorney-Advisor

Practice Areas

Contact Us

NOTE: Fields with a * indicate a required field.

Main Office
  1001 Warrenville Road, Suite 500
Lisle, IL 60532

  (630) 434-0400

Wheaton Office
  104 E. Roosevelt Road, Suite 202
Wheaton, IL 60187

  (630) 434-0400


Talk to our attorneys now. Call or email us:   

(630) 434-0400 Contact Us