Benjamin Sadun
Partner | Los Angeles
Benjamin Sadun

Benjamin Sadun, partner, is one of America’s leading litigators in artificial intelligence, privacy, and cybersecurity.

Named a Law360 Rising Star (2025), a Legal 500 Leading Partner (2026), and a Lawdragon Leading Litigator in America (2025, 2026, 2027), Mr. Sadun has won some of the highest-profile tech cases in the country. Most notably, he served as Second Chair trial counsel in the first Big Tech privacy class action ever to reach trial, where—after two weeks of examinations by Mr. Sadun and team—the Court dismissed 99.98% of the damages Plaintiffs sought and announced a partial directed verdict for Dechert’s client, Flo Health. The victory was profiled by Law360 and featured in The American Lawyer’s “Litigator of the Week.” Separately, Mr. Sadun achieved a complete defense victory as trial counsel for Johnson & Johnson in a 10-week jury trial recognized by Law360 as “Legal Lion Verdict of the Week” and selected by the Daily Journal among the year’s “Top Verdicts.”

Beyond the courtroom, Mr. Sadun regularly negotiates with the FTC, State Attorneys Generals, and Congressional Committees and advises on AI, data governance, and cybersecurity risk in consideration of the Biometric Information Privacy Act (BIPA), the California Consumer Privacy Act (CCPA), the California Invasion of Privacy Act (CIPA), the Confidentiality of Medical Information Act (CMIA), the FTC Act, and the General Data Protection Regulation (GDPR).

His insights on cutting-edge issues at the intersection of AI and privacy have made him a sought-after speaker and educator, including as an Adjunct Professor at USC Gould School of Law.

Mr. Sadun is Chambers ranked in Privacy & Data Security Litigation, celebrated by Lawdragon for being among America’s Top 20 Cybersecurity Litigators, and  recognized by The Legal 500 in Cyber Law, Consumer Products, Pharma and Medical Devices, Product Liability, Mass Tort, and Class Actions.

In 2025, Mr. Sadun was profiled and interviewed by Richard Hsu on the award-winning Hsu Untied Podcast and separately profiled and interviewed by Law360.  In 2023, he was interviewed on the ESI Survival Guide Podcast for his expertise in large language models and machine learning and featured by Law360 in an article about Dechert winning Cybersecurity and Privacy Group of the Year. Mr. Sadun regularly speaks at conferences across the United States on AI and Privacy and has led workshops in China and India concerning “The Intersection of AI and Privacy.”

Prior to joining Dechert, Mr. Sadun was a partner at another major international law firm.

Client Feedback

  • “Benjamin Sadun is a rising star. With an exceptional legal victory for Flo Health, Ben has the experience needed for victims of data breaches facing litigation.” - The Legal 500, 2026
  • “Benjamin Sadun is very commercially focused, with a splendid understanding of privacy matters in tech.”- The Legal 500, 2026
  • "Benjamin Sadun is a stand-out partner. Brilliant and engaged." - The Legal 500, 2025
  • "Benjamin Sadun is a true star – a very rare type of lawyer with huge attention to detail and technical knowledge of various pretty complicated things (e.g. AI, data management, mobile apps industry).”  - The Legal 500, 2024
  • A leading artificial intelligence mobile application developer accused of misappropriating user biometrics, successfully having complaint seeking the largest ever Illinois Biometric Information Privacy Act class action dismissed.
  • A frontier artificial intelligence data-annotation company in nationwide class-action litigation alleging that recordings captured through smart glasses were improperly disclosed to human reviewers, securing dismissal of all claims with prejudice.
  • An artificial intelligence electric car company startup and founders in arbitration and federal court against trade secret theft and RICO allegations, and as plaintiffs challenging competitor’s anti-solicitation employment terms.
  • The developer of the world’s most downloaded mobile health application with over 570 million downloads and 78 million monthly active users before regulators and in eight federal class actions and five foreign class actions—all alleging violations of user privacy—with US litigation ending with the court dismissing 99.98% of the damages sought by Plaintiffs.
  • A healthcare company specializing in female fertility accused of violating the Health Breach Notification Rule in negotiations with State Attorney Generals and the Federal Trade Commission, and also serving as trial counsel in a nationwide class action.
  • A network of fertility clinics in nationwide pixel litigation concerning the alleged sharing of sensitive website traffic with third parties.
  • A conglomerate of dermatology clinics in nationwide litigation concerning the alleged use of website tracking technology.
  • One of the nation’s largest healthcare organizations in an Attorney General investigation concerning an alleged data breach of sensitive patient information.
  • A global private equity firm concerning an alleged trafficking of data concerning PortCo website users.
  • One of the nation’s leading healthcare providers in an Office of Civil Rights Health and Human Services investigation concerning a data breach affecting millions.
  • A health management company in two purported class action lawsuits regarding disclosure of patient information following a data breach.
  • A major multinational corporation in arguing a motion for a new trial or remittitur, convincing Court to set-aside jury judgment and reduce damages by more than US$22 million.
  • A major multinational pharmaceutical corporation in winning a complete defense verdict as trial counsel in a 10 week product liability jury trial described by Courtroom View Network as one of the year’s “Top 10 Most Impressive Defense Verdicts.” 
  • A major multinational pharmaceutical corporation in a trial where the plaintiff sought hundreds of millions in compensatory and punitive damages yet was awarded nothing. The Daily Journal selected the case as one of its “Top Defense Verdicts” of 2018, and Law360 cited the case as one of the “Top Product Liability cases of 2018.”
  • A supplier of over-the-counter generic pharmaceutical products in a contract dispute with counterparty, including during expedited proceedings relating to a requested injunction.
  • A trustee in a limited partnership dispute regarding Malibu commercial real estate, mineral rights, and farmland, and related individuals in probate dispute.
  • A hedge fund accused of insider trading arising out of US$50 billion tender offer for a major pharmaceutical company.
  • A legacy U.S. airline as a plaintiff in antitrust litigation alleging Sherman Act violations against the largest global distributor of airline content.
  • An entertainment company in an intellectual property dispute.
  • The world’s largest airline in contract negotiations with a credit card company.
  • The world’s largest airline in antitrust dispute with Latin American online travel agency.
  • Leading Litigator in America – Lawdragon 500 (2025, 2026, 2027)
  • Privacy & Data Security: Litigation – Chambers USA (2026)
  • Cyber Law (including data Privacy and data Protection) - The Legal 500 (2024, 2025, 2026)
  • 40 Under 40 Legal - Counsel Collective (2026)
  • Top Attorney Under 40 Rising Star - Law360 (2025)
  • Consumer Products - The Legal 500 (2023)
  • Pharma and Medical Devices - The Legal 500 (2023)
  • Product Liability, Mass Tort, and Class Actions - The Legal 500 (2022)
  • Los Angeles Study Club: “Will AI Outthink You: How AI Is Disrupting Medicine and Patient Privacy” (March 14, 2026)
  • Continuing Legal Education: “The Intersection of Privacy and AI” (September 16, 2025)
  • Collegeit  Workshop: “The Intersection of AI and Privacy” (December 11, 2024)
  • O.P. Jindal Global University Lecture: “AI and Privacy” (March 18, 2024)
  • Continuing Legal Education: “Privacy and AI” (September 2023)
Services Industries
    • Northwestern University, B.A., Political Science and Legal Studies, Winner of 2008 “Best Thesis” Competition (Legal Studies Dept.), Founder & Editor-in-Chief of Northwestern Interdisciplinary Law Review, 2009, with Honors
    • Harvard Law School, J.D., 2012, Cyber Law Research Assistant to Professor Lawrence Lessig, Federal Bar Council Fellowship, SCOTUSource Project, Harvard Defenders
    • California
    • United States District Court for the Central District of California
    • United States District Court for the Northern District of California
    • United States Court of Appeals for the Ninth Circuit
    • United States District Court for the Southern District of California

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