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Daryl L. Joseffer

Daryl L. Joseffer

King & Spalding LLP

Washington, DC, USA


Daryl Joseffer is the head of King & Spalding’s national appellate practice. Chambers 2012 reported that Mr. Joseffer “impresses with his ‘great instincts’ and his ‘strong
ability in oral arguments.’” “‘When he is ‘on stage’ in court he is simply amazing, he is very persuasive, smooth and comfortable,’ clients enthuse.”

Mr. Joseffer has argued 11 cases and filed well over 100 briefs in the Supreme Court. His successful Supreme Court litigation record includes major patent, pharmaceutical, civil rights, environmental, and criminal cases.

Mr. Joseffer has also handled appeals in every United States Court of Appeals. He now devotes about half of his time to patent appeals in the Federal Circuit and the Supreme Court. Among other patent cases, he is now representing McKesson Corp. before the en banc Federal Circuit in Epic v. McKesson , which concerns the standard for imposing liability when multiple entities combine to practice a patented invention collectively, but no single entity does so individually.

Mr. Joseffer is nationally ranked or recommended in Chambers, Legal 500, and Benchmark . He joined King & Spalding in 2009 after serving as the Principal Deputy Solicitor General and, previously, an Assistant to the Solicitor General. Before joining the Office of the Solicitor General, Mr. Joseffer was Deputy General Counsel of the White House Office of Management and Budget, a partner at Kirkland & Ellis, and a law clerk to Judge Jerry E. Smith of the U.S. Court of Appeals for the Fifth Circuit.
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