Aaron Leiderman is a litigation associate in the San Francisco office of Munger, Tolles & Olson.
Mr. Leiderman’s practice focuses on complex civil litigation, particularly the defense of class action lawsuits in the communications, semiconductor and securities industries. His recent representations include:
Obtaining dismissal without leave to amend of a putative class action asserting unfair competition and other state-law claims against Verizon Online LLC, and successfully defending the decision on appeal.
Representing Wells Fargo Bank in securities class action litigation arising from the issuance of mortgage-backed securities.
Defeating class certification in a statewide wage and hour class action in federal district court involving meal and rest periods.
Representing a major semiconductor chip manufacturer in defense of unfair competition claims asserted by a class of millions of consumers.
Representing a mortgage servicing company in defense of a putative nationwide class action asserting claims under the Telephone Consumer Protection Act.
Mr. Leiderman has also represented a major corporation in an Alien Tort Statute action raising questions of first impression in the U.S. Court of Appeals for the 9th Circuit and has submitted an amicus brief to the U.S. Supreme Court on behalf of The Coca-Cola Co. and Archer Daniels Midland regarding the application of international law to corporations under the Alien Tort Statute. As part of his active pro bono practice, Mr. Leiderman recently represented an incarcerated inmate in a federal trial of the inmate’s excessive force claims against state correctional officers. Mr. Leiderman also represents plaintiffs in a constitutional challenge to S.B. 1070, Arizona's immigration law.
Mr. Leiderman received his J.D. from Columbia University School of Law in 2007, where he was a James Kent and Harlan Fiske Stone Scholar and the recipient of the Wilfred Feinberg Prize in Federal Courts. During law school, Mr. Leiderman served as the executive notes editor of the Columbia Law Review and published an article on appellate review of immigration appeals which was cited by the 9th Circuit in a precedent-setting decision, Ramadan v. Gonzales, 479 F.3d 646 (9th Cir. 2007). Mr. Leiderman also completed an externship with the Honorable Sonia Sotomayor, then of the U.S. Court of Appeals for the Second Circuit.
Following law school, Mr. Leiderman clerked for Chief Judge Dennis Jacobs of the U.S. Court of Appeals for the Second Circuit, was a litigation associate in the New York office of Davis Polk & Wardwell LLP, and clerked for Judge Barbara S. Jones of the U.S. District Court for the Southern District of New York.
In 2009, Mr. Leiderman published an article in the Administrative Law Review regarding statutory interpretation by administrative agencies, Agency Polymorphism, 61 Admin. L. Rev. 781 (2009).
Mr. Leiderman serves as the co-chair of the Bar Association of San Francisco Barristers Litigation Section. In that capacity, he has moderated and organized numerous panels on diverse legal issues, including "Human Rights Litigation After Kiobel," "How the Government Calculates FCPA Damages" and "Filings 101." He is also the chair of the Advisory Board of Experience Corps Bay Area, a non-profit organization that engages older adults as literacy tutors and mentors for underprivileged children.
Prior to attending law school, Mr. Leiderman analyzed international legal reform efforts in Buenos Aires, Argentina and worked at a San Francisco immigration law firm.