Hugh J. Marbury

Hugh J. Marbury

Cozen O'Connor

Recognized since 2013

Washington, District of Columbia

Practice Areas


Commercial Litigation

Mass Tort Litigation / Class Actions - Defendants

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Hugh focuses his practice on business and intellectual property litigation. His business litigation practice focuses on complex financial transactions and commercial disputes across multiple sectors. His intellectual property litigation practice includes patent, trademark, copyright, and trade secret litigation in diverse technological areas across many industries. Hugh has more than two decades of experience utilizing his considerable knowledge to counsel clients in a wide variety of industries on critical challenges facing their businesses. With a broad range of experience in complex issues, he offers his clients a nuanced perspective on the convergence of technology, business, and law. He dispenses C-suite level guidance to large corporations confronting complicated and difficult challenges, include bet-the-company matters. He has represented a variety of clients, from corporations to investor groups and high net worth individuals, in disputes valued at more than $4 billion. He has tried cases in federal court and has extensive arbitration and mediation experience. Hugh also obtained a secret clearance with the United States government as a result of some of his engagements.In 2009, Hugh was elected to the American Law Institute, where he has been an active member, working on the Restatement of Law Copyright.Pro bono is very important to Hugh. He is a founding trustee of a 501(c)(3) organization known as the Save Spriggs Farm Foundation that coordinated a number of different state, local and national funding sources to raise more than $3 million to preserve a 50-acre farm on the Magothy River outside Annapolis. He defended a Baltimore-based Iranian Synagogue in a copyright dispute over architectural drawings for its new synagogue and serves on the Equal Justice Council for the Maryland Legal Bureau.Hugh earned his bachelor’s degree from Pomona College. Hugh earned his law degree from Vanderbilt University Law School. In 2011, Hugh participated in the Harvard Business School Law Leadership Program.

Contact & Links
  • 1200 Nineteenth Street, NW, Third Floor
    Washington, DC 20036
  • Vanderbilt University, J.D. , graduated 1995
  • Pomona College, B.A., graduated 1991
Bar Admissions
  • District of Columbia, District of Columbia, District of Columbia Bar
  • Maryland, Maryland Bar
  • New York, New York Bar
Court Admissions
  • District of Columbia Court of Appeals
  • Supreme Court of the United States
  • United States Court of Appeals, Federal Circuit
  • United States Court of Appeals, Fourth Circuit
  • United States Court of Appeals. Third Circuit
  • United States District Court, District of Columbia
  • United States District Court, District of Maryland
  • United States District Court, Southern District of New York

Cozen O'Connor
Headquarters: Philadelphia, Pennsylvania

146 The Best Lawyers in America® awards

75 Best Lawyers: Ones to Watch® in America awards

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Recognized in The Best Lawyers in America® 2024 for work in:
  • Arbitration
  • Commercial Litigation
  • Mass Tort Litigation / Class Actions - Defendants
  • Appointed to the Patent Rules subcommittee for the US District Court for the District of Maryland
  • Elected to the American Law Institute
  • Best Lawyers in America for arbitration and litigation 2013-2019
  • Baltimore’s Best Lawyers
  • IP Star and Patent and Trademark Star by Managing IP
Additional Areas of Practice:
  • Copyright Law
  • Litigation - Intellectual Property
  • Mass Tort Litigation
  • Mediation
  • Product Liability Litigation
  • Product Liability Litigation - Defendants
  • Trademark Law


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