Jenner & Block

Gabriel K. Gillett’s practice focuses on complex commercial litigation at both the appellate and trial levels. He writes winning briefs in courts across the country—from the United States Supreme Court to state trial courts—and argues appeals in federal and state courts. He also develops, executes and advises on successful long-term legal strategies for clients facing multifaceted disputes with regulators and private parties.

Mr. Gillett is a member of the firm’s Appellate and Supreme Court Practice, as well as the Complex Commercial Litigation, Securities Litigation and Enforcement, and Media and First Amendment Practices.  He has experience in a variety of issue areas, including constitutional law, securities law, administrative law, contract and business disputes, insurance, telecommunications (including the Cable Act), technology and privacy (including the Stored Communications Act), bankruptcy litigation, land use, voting rights, and immigration. Recordings of Mr. Gillett’s oral arguments, copies of select briefs and decisions, and descriptions of recent experience are available here.

Mr. Gillett has an active pro bono practice.  He has secured appellate and trial-level victories in cases involving the First Amendment, the Fourth Amendment, immigration, the Public Trust Doctrine, and civil rights violations under 42 U.S.C. § 1983. He has also filed many amicus briefs on behalf of individuals and non-profit groups in cases where they have an interest.  Mr. Gillett serves as the vice chair of the Federal Civil Practice Committee of the Chicago Bar Association, and as a member of the Appellate Lawyers Association.

Prior to joining Jenner & Block in Chicago, Mr. Gillett was in the appellate and constitutional law group of a top law firm in New York, where he focused on federal securities cases, matters at the New York Court of Appeals, and challenges to government action under C.P.L.R. Article 78. Earlier in his career, Mr. Gillett served as a law clerk for judges on the U.S. Court of Appeals for the Third Circuit and the U.S. District Court for the Southern District of New York. Mr. Gillett also worked in political communications, opposition research, and served as Deputy Director of Rapid Response on John McCain’s 2008 presidential campaign.