Mark Osbeck, '86, teaches in the Law School's Legal Practice Program. He also is a leading authority on marijuana law, having authored two significant books on the subject: Cases and Materials on Marijuana Law (West, 2019) and Marijuana Law in a Nutshell (West, 2017).

Osbeck also is the author of a widely used legal research text: Impeccable Research: A Concise Guide to Mastering Legal Research Skills, 2nd ed. (West, 2015). In addition to marijuana law, Professor Osbeck's research interests include legal writing, legal research, judicial decision-making, and predictive legal analysis. Before joining Michigan Law in 2001, Professor Osbeck was a partner in the Denver office of a large law firm. He litigated sophisticated commercial cases for a number of years, first in Washington, D.C., and later in Denver, and he has extensive trial and appellate experience before a number of state and federal courts, including the U.S. Court of Appeals for the Tenth Circuit. While attending Johns Hopkins, he received a University Fellowship, the top departmental award. In law school, he received certificates of merit for legal writing and political philosophy.