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Adam S. Sieff

Associate

T 213.633.8618 Los Angeles
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Adam Sieff is an antitrust, media, and regulatory litigator. He represents internet, media, and technology clients in antitrust, First Amendment, Section 230, copyright, and regulatory litigation and appeals, including preemption matters and constitutional challenges to state and local regulation. He also counsels clients on legislation, ballot initiatives, and compliance with competition laws, and represents nonprofit and issue-advocacy organizations in constitutional rights, voting rights, and civil rights impact litigation, including before the U.S. Supreme Court.

Outside his practice, Adam is a lecturer in law at the University of Southern California, where he teaches courses that cover constitutional law and civil procedure. A member of the ABA Section of Antitrust Law and a director of the ABTL Young Lawyers' Division, he also serves as executive vice chair of the American Constitution Society for Law and Policy in Los Angeles, and on the boards of the Jewish Public Affairs Committee of California, Bet Tzedek's New Leaders Council, and the Los Angeles County Young Democrats, among other statewide and community nonprofit and political action organizations. The Los Angeles County Empowerment Congress has named Adam a "40 Under 40: Emerging Civic Leader," and Equality California honored him with its Community Leadership Award.

Prior to joining DWT, Adam served as voting rights and election integrity litigation counsel to the Biden for President campaign, practiced for several years in the San Francisco and Los Angeles offices of an international law firm, and clerked for the Hon. Christina A. Snyder of the U.S. District Court for the Central District of California.

Practice Highlights

Antitrust litigation

Obtained complete defense victory on appeal in nine-figure monopolization and restraint of trade litigation for a vertically-integrated nonprofit healthcare provider against a competitor's refusal to deal allegations, resulting in a precedent-setting published decision of the Sixth Circuit. Successfully advanced market definition arguments to secure complete defense victories at pleading stage for live entertainment company in competitor cases alleging tying claims involving NBA and NFL. Defeated motion to dismiss and obtained quick settlement providing world-famous performing artist with full injunctive relief sought from international venue operator and promoter.

First Amendment and media litigation

Successfully defended internet platforms against numerous federal claims stemming from third-party content. Obtained dismissal of multimillion-dollar federal trademark and right of publicity claims against recording artist and his affiliated businesses after plaintiff could not muster a response to DWT's motion to dismiss. On behalf of licensees, developed novel arguments to protect lawful competition in market for musical composition performance copyrights. Successfully advanced copyright infringement theories on behalf of enterprise software developer in action against service provider.

Regulatory and constitutional litigation

Successfully litigated preemption and dormant commerce clause claims on behalf of national trade association, obtained non-enforcement of enterprise-threatening statute. Secured stipulated injunction against enforcement of state law in violation of First Amendment after defeating motion to dismiss. Counselled client on lawfulness of enforcement actions threatened by state attorney general under state constitution and administrative procedures act. Crafted amendments to hostile legislation in several states, and prepared presentations to regulators that resulted in non-enforcement actions. Won and protected injunctions against civil rights violations under U.S. and state constitutions.

Antitrust Litigation

*Denotes experience prior to joining Davis Wright Tremaine
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First Amendment and Media Litigation

*Denotes experience prior to joining Davis Wright Tremaine
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Regulatory and Constitutional Litigation

*Denotes experience prior to joining Davis Wright Tremaine
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Admitted to Practice

  • California, 2014
  • U.S. Supreme Court, 2018
  • U.S. Court of Appeals 9th Circuit, 2018
  • U.S. Court of Appeals 6th Circuit, 2020
  • U.S. District Court Northern District of California, 2016
  • U.S. District Court Central District of California, 2017
  • U.S. District Court Southern District of California, 2021

Education

  • J.D., Stanford Law School, 2014, with distinction
    • John Hart Ely Prize
    • Editor, Stanford Law & Policy Review
    • President, Stanford Law Democrats
  • A.B., Columbia University, 2011, summa cum laude
    • Phi Beta Kappa
    • Charles A. Beard Prize
    • Edwin M. Robbins Prize

Memberships & Affiliations

    • Lecturer in Law, USC Gould School of Law, 2017-present
    • Executive Vice Chair for Los Angeles, American Constitution Society for Law & Public Policy, 2017-19; 2021-present
    • Executive Committee, LA County Bar Association Antitrust Section, 2022-present
    • Member of the Board, Young Lawyers' Division of the Association of Business Trial Lawyers – Los Angeles, 2021-present
    • Board Member, Bet Tzedek New Leaders Council
    • Constitutional Revision Working Group, California State Assembly, 2020-present
    • Member of the Board, Jewish Public Affairs Committee of California, 2018-present
    • President, 2022-Present; Board Member, 2017 — Silver Lake Forward
    • Board Member, Jewish World Watch, 2021-present
    • Committee Chair, Govern for California, 2018-present
    • Steering Committee, LA Jewish Federation New Leaders Project, 2017-present
    • Section of Antitrust Law, American Bar Association, 2015-present
    • Member of the Board & Policy Chair, Los Angeles County Young Democrats, 2016-2019
    • Legal Policy Counsel, Newsom for Governor, 2018
    • Advisory Board Member, Lawyers Committee for Civil Rights, S.F. Bay Area, 2014-2016

Professional Recognition

    • Julie Orr Heart of Justice Award, Davis Wright Tremaine, 2021
    • Community Leadership Award, Equality California, 2019
    • 40 Under 40 Emerging Civic Leader, Los Angeles Empowerment Congress, 2018

Background

    • Voting Rights Counsel, Biden for President, 2020
    • Judicial Law Clerk, Hon. Christina A. Snyder, U.S. District Court, Central District of California, Los Angeles, 2019-2020
    • Associate, Latham & Watkins LLP, San Francisco, Los Angeles, 2014-2019
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