Jenner & Block

David B. Diesenhouse is an associate in the firm’s Litigation Department and a member of the Complex Commercial Litigation group.  He has litigated complex civil matters in both state and federal court, ranging from breach of contract suits to actions involving land use, environmental, and insurance law.  Mr. Diesenhouse also has substantial experience in criminal and regulatory matters.  He has represented corporate clients in matters before both federal and state authorities, including the U.S. Department of Justice, and monitored a major financial institution following its settlement with the New York State Department of Financial Services and federal regulators.

Mr. Diesenhouse maintains an active and varied pro bono practice, and has represented clients at all levels of the judiciary, including the U.S. Supreme Court and in multiple appeals before the U.S. courts of appeals.  Among other pro bono engagements, he has represented an individual criminal defendant in federal court and acted as appellate counsel to a habeas petitioner, serving as the principal author of the appellate briefs and presenting oral argument before the U.S. Court of Appeals for the Seventh Circuit.

Mr. Diesenhouse was a recipient of the firm’s Mentoring Award in 2017.

Mr. Diesenhouse received his B.A. in Political Science and Diplomatic History from the University of Pennsylvania in 2006.  He earned his J.D. from Harvard Law School in 2011.  While at law school, Mr. Diesenhouse served as the Co-President/Co-Editor-in-Chief of the Harvard Journal on Legislation.  Prior to joining Jenner & Block, Mr. Diesenhouse served as a law clerk to the Honorable Mary A. McLaughlin of the United States District Court for the Eastern District of Pennsylvania and to the Honorable Maryanne Trump Barry of the United States Court of Appeals for the Third Circuit.

Mr. Diesenhouse is admitted to practice in New York.