Irvin B. Nathan

Irvin B. Nathan

Retired Partner

Irvin Nathan is a retired partner at the firm. He counseled and represented individuals, corporations, and professional services organizations in complex civil and criminal litigation and investigations. He also counseled clients on legal ethics, Congressional investigations, District of Columbia affairs, and other issues related to state and municipal governments. He is a fellow of the American College of Trial Lawyers.

Mr. Nathan most recently served as the Attorney General for the District of Columbia from 2011 to 2014. Prior to his service as DC Attorney General, he was the General Counsel of the US House of Representatives from 2007 to 2011. Mr. Nathan served as Principal Associate Deputy Attorney General at the US Department of Justice (1993-94) and Deputy Assistant Attorney General for Enforcement in the Criminal Division (1979-81). He also served as Chair of the District of Columbia Bar Legal Ethics Committee and Vice Chair of the DC Board of Professional Responsibility which is appointed by the DC Court of Appeals to oversee the attorney disciplinary system in the District of Columbia.

In his more than 35 years in the private practice of law, Mr. Nathan represented US Senators; US Congressmen; a sitting Cabinet member; a Secretary of the Navy; the Commissioner of Baseball; CEOs and CFOs of Fortune 500 companies; law firms and partners; accounting firms and partners; and numerous corporations and members of their Boards. While DC Attorney General, Mr. Nathan was a member of the National Association of Attorneys General and the International Municipal Lawyers Association. He is a member of the Society of Attorneys General Emeritus. He is an adjunct professor at Georgetown University Law Center and has taught as a visiting professor at The Hebrew University.

Mr. Nathan is a graduate of Johns Hopkins University and Columbia University Law School, and served as law clerk for the Honorable Simon E. Sobeloff, US Court of Appeals for the Fourth Circuit.


  • LLB, Columbia Law School, 1967
  • BA, Johns Hopkins University, 1964
  • District of Columbia
  • Supreme Court of the United States
  • United States Court of Appeals, Fourth Circuit, The Honorable Simon E. Sobeloff

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