Mark maintains a broad civil litigation and regulatory practice, specializing in complex disputes.

Mark joined Lenczner Slaght after practicing in the Washington, D.C. office of a top international law firm, where he specialized in complex commercial litigation, representing, among other clients, large pharmaceutical companies, sports leagues, and pro bono parties. Before private practice, Mark clerked for Judge Priscilla Owen on the United States Court of Appeals for the Fifth Circuit.

Mark graduated with highest honors from the University of Texas School of Law, where he was a member of the Chancellors Society, Order of the Coif, and the Texas Law Review. He received the Beck Award for Legal Research and Writing Excellence and the Dean’s Achievement Award in Legal Research and Writing and Civil Procedure. He served as a teaching assistant in Legal Research and Writing for Foreign Lawyers and participated in many pro bono legal clinics. Mark received his undergraduate degree from Colorado College, where he served as President of the Colorado College Student Government Association.

Before attending law school, Mark worked as a policy analyst and lobbyist for two Colorado non-profit organizations and as a policy analyst in the Texas House of Representatives.