Prominent New York Appellate Lawyer Caitlin Halligan Joins Gibson Dunn

March 31, 2014

Gibson, Dunn & Crutcher LLP is pleased to announce that Caitlin Halligan is joining the firm as a partner in the New York office.  Halligan, former General Counsel to the New York County District Attorney’s Office, will continue to focus on appellate law at Gibson Dunn.

“We are delighted to welcome Caitlin to the firm,” said Ken Doran, Chairman and Managing Partner of Gibson Dunn.  “We have tremendous depth in our Appellate Group, which saw five lawyers argue seven cases during the U.S. Supreme Court’s 2013 Term.  Caitlin is an exceptionally accomplished appellate litigator with a high-profile and national reputation, who will add even more depth to our talent pool.”

“Caitlin is a terrific addition to our national appellate practice and to our New York office in particular,” said Robert Serio, Co-Partner in Charge of the New York office.  “She is an immensely talented litigator with unmatched credentials.  She will add needed capacity not only to our appellate and litigation practices, but also to our white collar practice, given her career in the public sector and her experience with criminal law issues.”

“Gibson Dunn is renowned for its preeminent litigation and appellate practices,” said Halligan.  “By any measure, the firm continues to have an unmatched level of success in all appellate courts, especially the U.S. Supreme Court, and I am truly excited to join such an esteemed group.”

About Caitlin Halligan

Halligan focuses her practice on appellate litigation.  She has served as counsel of record for a party or amicus at the certiorari or merits stage in more than 40 matters in the U.S. Supreme Court.  She has argued five cases before the U.S. Supreme Court, in matters ranging from Commerce Clause challenges to criminal procedure.  She has trial level experience and has also argued numerous cases before the U.S. Court of Appeals for the Second Circuit, the New York Court of Appeals, and New York’s intermediate appellate courts.

Before joining Gibson Dunn, Halligan served as General Counsel to the New York County District Attorney’s Office since 2010, where she oversaw more than 500 lawyers.  From 2007 to 2009, she was a partner at Weil, Gotshal & Manges LLP, where she was head of the appellate practice. 

From 2001 to 2007, Halligan served as Solicitor General for the State of New York, where she represented the state in federal and state appellate courts and supervised a team of 45 lawyers.  Prior to serving as New York Solicitor General, she was First Deputy Solicitor General.  From 1999 to 2000, Halligan was the first Chief of the New York Attorney General’s Internet Bureau, where she developed law enforcement and policy initiatives regarding online consumer fraud, privacy, online securities trading and other Internet-related issues.

She has served as a member of Columbia Law School’s Adjunct Faculty since 2005.  From 2007 to 2009, she also served in a pro bono capacity as counsel to the Board of the Lower Manhattan Development Corporation, an entity charged with leading the re-development of the World Trade Center site in downtown Manhattan.  She has also served as a board member of the Fund for Modern Courts and the National Center for Law and Economic Development, as well as a member of several selection committees for the New York state courts.

Halligan was a law clerk for U.S. Supreme Court Justice Stephen Breyer and Judge Patricia Wald of the U.S. Court of Appeals for the D.C. Circuit.  She graduated magna cum laude in 1995 from the Georgetown University Law Center, where she was Order of the Coif, served as Managing Editor of the Georgetown Law Journal and participated as an Olin Fellow in Law and Economics.  Prior to attending law school, she served as a legislative aide for U.S. Representative William Alexander of Arkansas.