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 involving MTBE contamination of groundwater, 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 on groundwater-remediation issues.  He has worked with hydrogeologists and engineers in preparing expert reports regarding groundwater contamination at retail stations and water utility districts.  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. 


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.)


J.D. (2004) William and Mary School of Law
M.P.P. (2004) College of William & Mary
B.A. (2000) Georgetown University

Other Distinctions

Mr. Cooper served as an editor of the William and Mary Law Review and was named a Benjamin Rush Scholar.  After law school, he served as a law clerk to the Hon. Patrick Michael Duffy of the U.S. District Court for the District of South Carolina.  Mr. Cooper has been named a “Rising Star” in business litigation by the rating service Super Lawyers and has been honored by the National Bar Association with its “2013 Nation’s Best Advocates: 40 Lawyers Under 40” award.  He has also been named to Lawyers of Color, LLC’s Inaugural Hot List for the Mid-Atlantic Region.