Gregory J. DuBoff Partner

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Clients turn to Greg to handle their most important commercial disputes, whether that is defending a $1 billion contract claim or achieving a nine-figure international arbitration award. Drawing on his extensive experience representing clients at trial and on appeal, Greg is as comfortable delivering a closing argument as he is drafting a dispositive motion. That same experience equips Greg to drive his clients’ strategic goals at every stage of litigation. A Marine veteran, Greg received his bachelor’s degree in economics from Yale University and graduated cum laude from Harvard Law School.

Given his diverse skillset, clients trust Greg to achieve optimal results in an array of practice areas, including complex commercial litigation, torts, environmental litigation, and insurance recovery. Greg has first-chaired nearly a dozen trials, argued appeals throughout the country, and represented clients in international arbitration.

Greg also maintains a robust pro bono practice and co-leads McGuireWoods’s pro bono Appellate Justice Initiative. In that role, Greg represents clients convicted of murder and other criminal offenses in courts around the country, including the U.S. Supreme Court.

Following law school, Greg served for six years on active duty in the United States Marine Corps. He graduated in the top 1% of his class at The Basic School and was the honor graduate from Naval Justice School, where he also received the New York City Bar Association’s Trial Advocacy Award. Greg’s efforts as a defense counsel—including five acquittals in a five-month span—led to his selection as the Marine Corps Defense Counsel of the Year.

At Yale, Greg was a four-year letter winner in lacrosse and received All-Ivy and All-New England honors. At Harvard Law School, Greg received the Irving Oberman Memorial Prize for legal history writing.

Prior to joining McGuireWoods, Greg clerked for Judge D. Michael Fisher of the U.S. Court of Appeals for the Third Circuit.


  • In 2023, served as lead trial counsel for Hilton in California state court. Trial resulted in the dismissal of all claims against Hilton.
  • Lead counsel for Verizon in litigation brought by a real estate investment firm. In 2022, secured a preliminary injunction to move the case to Delaware Chancery Court. In 2023, the court dismissed all claims against Verizon with prejudice.
  • In 2023, lead counsel for FedEx in five consolidated cases stemming from a multiple-fatality truck accident. Achieved summary judgment on the bulk of plaintiffs’ claims and favorable settlement on the remaining claims.
  • In 2022, achieved a nine-figure international arbitration award for a mining-focused investment firm after a two-week evidentiary hearing.
  • Represented The Boeing Company in district court and on appeal in a nationwide RICO class action. In 2022, the Fifth Circuit ordered dismissal of all claims against Boeing.
  • Pro bono appellate representation of a client convicted of murder in Missouri state court.
  • Retained by Yahoo!/Verizon approximately 80 days before a jury trial to represent it in a billion dollar contract dispute with Mozilla regarding search-engine revenue. Shortly before trial, the case settled.
  • Trainum v. Rockwell Collins, Inc., 765 F. App’x 514 (2019) (argued) – Successfully represented an aeronautical communications company in the Second Circuit Court of Appeals.
  • Represented Caterpillar Inc. in an international product liability and contractual dispute.
  • Represented a medical marijuana company in an administrative appeal before the Virginia Court of Appeals. No. 1070-19-2 (argued).