Claire O'Sullivan is an associate in the Los Angeles office of Irell & Manella LLP where she is a member of the firm's litigation practice group.  Prior to joining Irell, Ms. O'Sullivan worked as a Judicial Clerk for both Justice Robert Blair and Justice Eleanore Cronk of the Court of Appeal for Ontario.

Ms. O'Sullivan earned her J.D. from Columbia Law School in 2010 where she was a Hamilton Fellow and a Harlan Fiske Stone Scholar.  While in law school, Ms. O'Sullivan served as a Senior Editor of the Columbia Law Review and as a Juvenile Project Intern for the Legal Aid Society's Immigration Law Division.  She also worked as a Judicial Extern to now Supreme Court Justice Sonia Sotomayor when she was with the U.S. Court of Appeals for the Second Circuit.

Ms. O'Sullivan earned her B.A. in Contemporary Studies and Spanish, with honors, from the University of King's College in Nova Scotia in 2007. 

Bar Admissions

• 2010, New York
• Not yet admitted to the State Bar to practice law in California