Maxeiner is the associate director of the Center for International and Comparative Law. He is experienced in both academics and practice both in American and in German law. He began professional practice in the Honors Program of the Antitrust Division of the U.S. Department Justice, and was then honored as Humboldt Fellow at the Max Planck Institute in Munich, where he did a doctorate in comparative antitrust law. Returning to practice, he was senior litigation associate at two international law firms in Manhattan, most recently at Kaye Scholer, working principally in intellectual property litigation. Later, as vice president and associate general counsel of Dun & Bradstreet, Inc. the world's leading business information provider, he represented the company in government affairs, including in international privacy law, database protection and revision of the Uniform Commercial Code. Maxeiner joined the faculty in 2004. He has visited at other law schools, including Rutgers, The Catholic University of America, the University of Missouri-Kansas City, and Stetson. He is a member of the American Law Institute.