About Us

Mason LLP is a civil litigation firm representing plaintiffs who have been injured or harmed by corporate misconduct. We consider ourselves one of the nation’s leading firms specializing in litigation involving large numbers of people harmed by data breaches, defective or mislabeled products, environmental incidents and the like.

Our attorneys have a long history of obtaining major verdicts and settlements. We frequently lead, co-lead or take on other leadership roles in class actions of national significance. Examples include, the Chinese Drywall Litigation, the U.S. Office of Professional Management Data Breach, the BP Oil Spill Litigation and the Exxon Valdez Oil Spill Litigation.




(202) 975-0476

Marketing Director

(202) 640-2064


(202) 640-1171

Client Support Specialist

(202) 640-1166

Case Intake Specialist

(202) 640-1161