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Dan Himmelfarb

Dan Himmelfarb

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Mayer Brown’s Supreme Court & Appellate practice recognized among the “elite of the elite”

– Reuters Special Report

"a brilliant and open-minded legal thinker, an expert written and oral communicator, and a business-savvy and trusted team partner"

The Legal 500 United States

Dan Himmelfarb is a partner in Mayer Brown’s Washington DC office and a member of the firm's Supreme Court & Appellate practice. He is co-leader of the Washington DC Litigation practice.  

Dan has filed more than 200 merits and petition-stage briefs in the US Supreme Court and has argued 44 cases in 11 different appellate courts, including 12 in the US Supreme Court and 13 in the Second Circuit. He has particular experience in the areas of torts, administrative law, criminal law, constitutional law and statutory interpretation. Dan is a co-author of the tenth edition of Supreme Court Practice, published by BNA Books in 2013, and the first and second editions of Federal Appellate Practice, published by BNA Books in 2008 and 2013.

Dan's appellate work has earned him recognition in The Legal 500 United States, The National Law Journal's "Appellate Hot List," The Best Lawyers in America and Washington DC Super LawyersReuters has identified him as one of "the elite of the elite" among those who practice in the Supreme Court.

Before joining Mayer Brown in 2007, Dan served for five years as an Assistant US Attorney in the Southern District of New York and then for five years as an Assistant to the US Solicitor General. In 2005, he 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. Prior to that, he had judicial clerkships with Judge J. Michael Luttig of the US Court of Appeals for the Fourth Circuit and Associate Justice Clarence Thomas of the US Supreme Court. 

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