FacultyFaculty/Author Profile

Ethan Dettmer

Gibson, Dunn & Crutcher LLP

San Francisco, CA, USA


Ethan Dettmer is a partner in Gibson, Dunn & Crutcher's San Francisco office, and is a member of the firm's Litigation Department. He is also a member of the Steering Committee of the firm's Securities Litigation Practice Group.

Mr. Dettmer's practice is focused on securities, corporate governance, and professional malpractice litigation, as well as internal corporate investigations. He has represented clients in contract, real estate, intellectual property, consumer class actions, and other business disputes, as well as constitutional litigation over equal protection and due process, First Amendment, and preemption questions. In one of his recent matters, he was member of the trial team that challenged California's Proposition 8 in federal court under the United States Constitution. Perry v. Schwarzenegger, 704 F.Supp.2d 921 (N.D. Cal. 2010). He was also a member of the team that won summary judgment on behalf of The Williams Companies, Inc. and its former CEO in securities litigation seeking nearly $3 billion in damages in connection with the bankruptcy of Williams' former telecommunications subsidiary. He was also one of the Gibson Dunn lawyers who subsequently defended that summary judgment victory on appeal. In re Williams Companies Securities Litigation, 558 F.3d 1130 (10th Cir. 2009); see 558 F.3d 1144 (10th Cir. 2009) (upholding, in the same case, what plaintiffs labeled "the highest costs award in the history of American jurisprudence" in favor of Williams and the other defendants). 

Mr. Dettmer is a member of the State Bars of California and Michigan, and is admitted to practice in various federal courts. He was a law clerk to the late Justice James H. Brickley of the Michigan Supreme Court before joining Gibson Dunn, and is an honors graduate of Harvard College and the University of Michigan Law School. Mr. Dettmer  was an admissions and financial aid officer at Harvard and Radcliffe Colleges before attending law school.

Ethan Dettmer is associated with the following items:
Treatise Chapters  Treatise Chapters Pleading Standards - Securities Litigation: A Practitioner's Guide (2nd Edition), Tuesday, October 24, 2017
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