Hon. Gregory G. Katsas

Partner, Jones Day

Gregory Katsas handles complex litigation in areas including administrative law, antitrust, constitutional law, employment discrimination, international law and arbitration, and products liability. He has argued more than 40 appeals, has won more than 30 appeals, and has argued in every federal appellate court including the U.S. Supreme Court.

Between 2001 and 2009, Greg served in many senior positions in the U.S. Department of Justice, including Assistant Attorney General for the Civil Division and Acting Associate Attorney General. In these positions, he handled or supervised most of the government's leading civil appeals. His own cases included such important topics as the detention of enemy combatants at Guantanamo Bay, the use of national security letters in major counterterrorism investigations, the applicability of the state secrets privilege in litigation about covert CIA activities, the closure of immigration hearings for suspected terrorists, and the constitutionality of federal statutes on subjects ranging from the Pledge of Allegiance to partial-birth abortion. He also oversaw all of the Civil Division's enforcement activities under the False Claims Act and the Food, Drug, and Cosmetics Act. He has testified before Congress eight times, on topics ranging from the material support statute to federal pleading standards under Ashcroft v. Iqbal.

In 2009, Greg was awarded the Edmund Randolph award for outstanding service, the highest award bestowed by the Department of Justice. Attorney General Michael Mukasey described Greg as "widely regarded as one of the Justice Department's most outstanding civil and appellate attorneys."

  • Harvard University (J.D. 1989; Executive Editor, Law Review)
  • Princeton University (A.B. 1986)

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Publications and Multimedia
25 Years of Justice Clarence Thomas - Podcast
Practice Groups Podcast
June 28, 2016
Supreme Court Concludes 2015 Term - Podcast
Practice Groups Podcast
June 27, 2016
Drones and Presidential Authority - Event Audio/Video
2014 Annual Student Symposium
March 25, 2014
Defending the Defense of Marriage Act - Event Audio
Indianapolis Lawyers Chapter
August 18, 2011
Federalism and Interstate Competition - Event Audio/Video
2011 Annual Student Symposium
February 26, 2011
Civil Litigation under the Roberts Court - Event Audio/Video
2008 National Lawyers Convention
November 21, 2008
Intellectual Property Rights and State Sovereign Immunity: The Recent Supreme Court Decisions
Intellectual Property Practice Group Newsletter - Volume 3, Issue 2, Summer 1999
October 01, 1999
Congressional Control Over State Sovereign Immunity: The Recent Supreme Court Decisions
Federalism & Separation of Powers Practice Group Newsletter - Volume 3, Issue 1, Spring 1999
July 01, 1999
Federalism Revived? The Printz and City of Boerne Decisions
Federalism & Separation of Powers Practice Group Newsletter - Volume 2, Issue 1, Spring 1998
May 01, 1998