Mitchell focuses his practice on complex commercial litigation, antitrust matters, and class actions in federal and state courts. He counsels clients in all stages of litigation, from pre-litigation dispute resolution through discovery, dispositive motions, and appeals. His experience includes drafting briefs, preparing witnesses for depositions, and managing discovery.

Prior to joining Mintz, Mitchell served as a law clerk to the Honorable O. Rogeriee Thompson of the United States Court of Appeals for the First Circuit. Earlier, as an associate at an international law firm where he had previously worked as a summer associate, he handled a broad spectrum of complex commercial litigation matters. He began his legal career as a law clerk to the Honorable Alvin W. Thompson of the United States District Court for the District of Connecticut.

During law school, Mitchell served as managing editor of the Boston College Law Review and was a member of the National Moot Court Team. He and his teammate also won the Wendell F. Grimes Moot Court Competition.