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Abby L. Dennis

Washington, DC

t: 202.895.7580
f: 202.237.6131
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Duke University School of Law, J.D., magna cum laude, 2008; Order of the Coif; Mordecai Scholar; Faculty Award for Achievement in Constitutional and Civil Rights Law; Bidlake Award; Executive Editor, Duke Law Journal

Duke University, A.B., summa cum laude, Economics, 2001; Phi Beta Kappa; William J. Griffith University Service Award; Golden Key Honor Society; Phi Eta Sigma Honor Society


Hon. Susan H. Black, United States Court of Appeals for the Eleventh Circuit, 2008-2009


District of Columbia

North Carolina

United States Courts of Appeals: Sixth Circuit, Eleventh Circuit

United States District Courts: Northern District of Illinois and District of Columbia

Court of Federal Claims

Abby Dennis, a partner in the Washington, D.C. office, is a complex commercial litigator who has litigated and tried a wide variety of cases, including disputes related to contract law, business torts, antitrust, securities fraud, constitutional law, and patent and trademark infringement.  She has also represented clients before the Department of Justice and Federal Trade Commission.

In her time at the firm, Ms. Dennis has amassed significant trial and arbitration experience, serving as a core member of trial teams in some of the firm’s landmark wins, including, most recently, Starr International Co. v. United States, in which the firm secured an improbable victory against the United States for illegally taking over insurer AIG during the financial crisis of 2008 following an eight-week trial in the Court of Federal Claims in 2014. 

Previously, Ms. Dennis helped obtain a multi-million dollar verdict for patent infringement in Bascom Global Internet Services v. AOL in the Eastern District of New York, and successfully defended a Fortune 100 company in a multi-hundred million dollar AAA arbitration involving claims of breach of contract and tortious interference.  

In addition to her trial work, Ms. Dennis has been a part of several successful appeals at the firm, including the reversal of a jury verdict in Terra Firma Investments v. Citigroup, Inc. in the United States Court of Appeals for the Second Circuit in 2013.  She has also served as lead counsel and argued in pro bono cases before the United States Court of Appeals for the Sixth and Eleventh Circuits, securing partial habeas corpus relief and a new state-court appeal for her client in Vance v. Scutt in the Sixth Circuit in 2014.

Throughout her career, Ms. Dennis has represented many prominent clients in high-profile matters, including American Express, Barclays Bank, Delta Air Lines, DuPont, Oracle Corporation, and UnitedHealth Group. 

Prior to joining the firm, Ms. Dennis was a law clerk for the Honorable Susan H. Black of the United States Court of Appeals for the Eleventh Circuit in Jacksonville, Florida.  Ms. Dennis is a 2008 magna cum laude graduate of Duke University School of Law, where she was a Mordecai Scholar, served as Executive Editor of the Duke Law Journal, and participated in the Wrongful Convictions Clinic, working on a matter that ultimately resulted in an exoneration. 



Reining in the Minister of Justice: Prosecutorial Oversight and the Superseder Power, 57 Duke Law Journal 131 (2007)        

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