Sedgwick LLP

Harmon L. Cooper

Washington, D.C.
tel: 202.204.1000
fax: 202.204.1001


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Related Practices



Harmon L. (Monty) Cooper practices in the areas of complex civil, environmental, and commercial litigation.  Mr. Cooper serves as a member of a national coordinating defense counsel team for major petroleum companies in multidistrict litigation, which has included defending nuisance, trespass, and failure-to-warn claims.  He has taken and defended numerous depositions, including defending 30(b)(6) depositions of engineers, and has worked with hydrogeologists and engineers to prepare expert reports.  He has also assisted the defense of a major petroleum company against Comprehensive Environmental Response, Compensation, and Liability Act and common law claims seeking contribution for environmental remediation costs.

Areas of Concentration

 B.A. (2000) Georgetown University

M.P.P. (2004) College of William & Mary Program in Public Policy

J.D. (2004) William & Mary School of Law

  • Editor — William & Mary Law Review
  • Member — William & Mary Bill of Rights Journal
  • Benjamin Rush Scholar


  • Law Clerk — Hon. Patrick Michael Duffy of the U.S. District Court for the District of South Carolina

Prior Experience

  • Special Assistant State’s Attorney — Prince George’s County, Maryland

Professional and Community Activities and Honors

Professional and Community Activities

  • Chairman — Redevelopment Authority of Prince George’s County (MD)
    – Profiled in national urban affairs magazine, Next City, for work with Redevelopment Authority:
  • Co-Chairman — DC Bar’s Energy, Environment and Natural Resources Section’s Water Quality and Water Resources Standing Committee
  • Board Member — The Maryland Litigator (Maryland State Bar Association Litigation Section’s Newsletter)
  • Board Member — Environmental and Energy Study Institute


  • Rising Star — Washington, D.C. Super Lawyers Magazine
  • Nation’s Best Advocates: 40 Lawyers Under 40 Award — National Bar Association
  • Lawyers of Color’s Inaugural “Hot List” (Mid-Atlantic Region)
  • Forty Under 40 Award — Prince George’s County (MD) Social Innovation Fund
  • Vanguard Award — Next City (National Urban-Affairs Magazine)
  • Leadership Maryland — Class of 2015


District of Columbia; Maryland; South Carolina; 4th U.S. Circuit Court of Appeals; U.S. District Court (D.D.C.); U.S. District Court (D. Md.)