Experience 

Dan Himmelfarb is a member of Mayer Brown’s Supreme Court & Appellate practice.  Before joining the firm in 2007, he served for five years as an Assistant to the US Solicitor General, during which time he argued 10 cases and filed more than 150 merits and petition-stage briefs in the US Supreme Court.  Before working in the Solicitor General’s Office, Dan served for five years as an Assistant United States Attorney in the Southern District of New York, where he tried eight cases in district court and argued 10 cases in the US Court of Appeals for the Second Circuit.  In 2005, Dan received the US Attorney General’s Distinguished Service Award.

Before joining the Department of Justice, Dan was in private practice for three years in New York.  Following graduation from law school, he had judicial clerkships with Judge J. Michael Luttig of the US Court of Appeals for the Fourth Circuit (1991-1992) and Associate Justice Clarence Thomas of the US Supreme Court (1992-1993).

Since joining Mayer Brown, Dan has argued cases in the Fourth, Sixth and Seventh Circuits, and in the Tennessee Court of Appeals.  He also represented the petitioner in CSX Transportation, Inc. v. Hensley, 129 S. Ct. 2139 (2009) (per curiam), in which the Supreme Court took the highly unusual step of summarily reversing the decision below, without merits briefing or oral argument.  Dan is a co-author of Mayer Brown's Federal Appellate Practice treatise, published by BNA Books in 2008.

Education 

Yale Law School, JD, 1991; Senior Editor, Yale Law Journal • Princeton University, AB, magna cum laude, 1987

Admitted

• District of Columbia
• New York
• US Supreme Court
• US Court of Appeals for the Federal, Second, Fourth, Sixth and Seventh Circuits
• US District Court for the Southern District of New York