Charles Kotuby counsels both private clients and sovereign states in complex global disputes. His U.S-based practice is focused on government regulation and federal appeals. He has authored briefs in more than a dozen cases before the U.S.Supreme Court and has argued cases concerning federal statutory and constitutional issues before the U.S. Courts of Appeals for the Third, Sixth, and Ninth Circuits.His global practice is focused on international litigation, commercial and investment arbitration. He has counseled clients in both common and civil law systems, and frequently deals with novel issues of public and private international law. Charles has appeared as counsel in international matters before the U.S. Supreme Court and the Court of Justice of the European Union, and before ICSID and UNCITRAL tribunals. He regularly advises energy and mining clients on investment protections in Latin America, Africa, Southeast and Central Asia, and on maritime issues under the United Nations Convention on the Law of the Sea (UNCLOS).