Trey Mayfield

Phone: (202) 630-6252

Trey Mayfield is a seasoned trial lawyer and former prosecutor whose practice has covered a broad array of substantive legal areas, from commercial disputes and business torts to criminal prosecution and defense.  Trey joined The Lewis Firm in 2011, where his practice focuses on the representation of qui tam relators in whistleblower actions, plaintiffs in fraud matters and businesses in commercial disputes.  His clients have included individuals, Fortune 100 companies, religious institutions, and small businesses.

Prior to joining The Lewis Firm, Trey served as an Assistant United States Attorney for the District of Utah, where he investigated and prosecuted bank, wire, securities, tax and federal funds fraud, public corruption, and money laundering.  Before entering public service, Trey practiced with the Northern Virginia law firm of Cuccinelli & Day, and in the litigation departments of the national law firms of Sidley Austin, Fenwick & West, and Weil, Gotshal & Manges.  In addition, Trey served as a judicial clerk to United States District Judge Robert H. Cleland in Detroit, Michigan from 1999-2000.

Trey represents both plaintiffs and defendants in state and federal courts throughout the United States.  His matters are complex and varied, and have included novel issues involving religious freedom, free speech, covenants not to compete, RICO and internal corporate investigations, employment discrimination, class actions, securities fraud, appellate advocacy, and criminal fraud prosecutions.

Trey received his juris doctorate from Northwestern University School of Law in Chicago, where he served as a Note & Comment Editor on the Journal of Criminal Law & Criminology, and was a member of Northwestern’s national champion trial team.  He graduated from Michigan State University with a B.A. in Public Administration.  Prior to attending law school, Trey managed regulatory affairs for a national trade association.  He is licensed to practice in Virginia, California, and the District of Columbia.

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