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Miriam R. Vishio

Miriam R. VishioPhone: (202) 899-4109
Email: mvishio@zelle.com

Mimi has extensive litigation and trial experience, representing plaintiffs and defendants in complex antitrust and commercial litigation -- including merger enforcement actions, price-fixing and monopolization cases, and licensing and contractual disputes -- before federal and state courts and in international arbitrations.

Mimi’s practice centers on antitrust litigation, antitrust compliance counseling, and premerger notification advice and assistance with Hart-Scott-Rodino Act filings. She has experience navigating federal civil and criminal investigations and litigations, complex merger matters, and multi-district antitrust class actions in a diverse array of industries, including financial services, sports, entertainment, advertising, telecommunications, network technology, major appliances, and health insurance.

Prior to joining Zelle, Mimi was a Trial Attorney with the U.S. Department of Justice’s Antitrust Division, where she led conduct and merger investigations and served as a key member of several litigation and trial teams. Before joining the DOJ, Mimi was an antitrust litigator at a large national law firm.


  • American University Washington College of Law, J.D., magna cum laude, 2002
  • University of Massachusetts Amherst, M.S., 1997
  • Princeton University, A.B., 1995
  • Professional Affiliations:

  • American Bar Association, Antitrust Section
  • Maryland State Bar Association
  • District of Columbia Bar Association
  • Sports Lawyers Association