Jason Y. Siu Jason Y. Siu

Jason Y. Siu

Associate
San Francisco

Jason focuses his practice on appeals and complex litigation. He has litigated a broad range of high stakes cases including civil rights, labor and employment, breach of contract, securities, and mass tort issues. He has been involved in five federal multidistrict litigations.

Before joining the firm, Jason was a member of the appellate practice group at Morgan Lewis’s D.C. office, where he coauthored briefs before federal and state appellate courts and drafted pivotal motions in trial courts.

Jason has clerked for four federal judges: Hon. W. Eugene Davis of the U.S. Court of Appeals for the Fifth Circuit; Hon. Eldon E. Fallon of the Eastern District of Louisiana; and Hon. Charles R. Breyer and Hon. Vince Chhabria of the Northern District of California.

He has also been an adjunct professor at the University of California, College of the Law, San Francisco.

Jason earned his law degree from the University of California, Berkeley, School of Law, where he was Articles & Essays Editor of the California Law Review, Senior Articles Editor of the Asian American Law Journal, and competed in the National Moot Court Competition. He concurrently received a Master of Public Policy from the U.C. Berkeley, Goldman School of Public Policy. He graduated, cum laude, from Georgetown University, and was a Fulbright Scholar in Macau.

Representative Matters

White v. Rockport Administrative Services, LLC (2025)

California Court of Appeal affirms JNOV and nonsuit in a wrongful termination action against a nursing facility, eliminating a $1.2 million jury verdict.

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Shorter v. Baca (III) (2025)

Horvitz & Levy, as court-appointed amicus counsel, files successful pro bono brief in support of a former pretrial detainee.

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Musharbash v. San Antonio Regional Hospital (2024)

Horvitz & Levy successfully secures writ relief ordering summary judgment in favor of hospital in wrongful death.

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Patterson v. College Medical Center (2024)

Horvitz & Levy successfully secures writ relief protecting medical center from discovery order compelling it to release psychiatric patients’ contact information.

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LaMarr v. UC Regents (2024)

Horvitz & Levy successfully defends judgment in favor of The UC Regents in an employment case involving an employee who voluntarily transferred to a lower-ranked position to avoid facing possible termination.

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Hughes v. Libeu (2025)

California Court of Appeal affirms jury verdict finding defendant was not negligent in a vehicular accident case, rejecting plaintiff’s contention of jury misconduct.

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Credentials

Education

  • University of California, Berkeley, School of Law
    J.D., 2017
  • University of California, Berkeley, Goldman School of Public Policy
    M.P.P., 2017
  • Georgetown University
    B.A., cum laude, Regent’s Citation Award, 2012

Clerkships

  • Hon. Charles R. Breyer and Hon. Vince Chhabria, U.S. District Court, Northern District of California (2022–2023)
  • Hon. W. Eugene Davis, U.S. Court of Appeals, Fifth Circuit (2018–2019)
  • Hon. Eldon E. Fallon, U.S. District Court, Eastern District of Louisiana (2017–2018)

Bar Admissions

  • California
  • U.S. Supreme Court
  • U.S. Court of Appeals, Second Circuit
  • U.S. Court of Appeals, Fifth Circuit
  • U.S. Court of Appeals, Sixth Circuit
  • U.S. Court of Appeals, Seventh Circuit
  • U.S. Court of Appeals, Ninth Circuit
  • U.S. District Court, Northern District of California
  • U.S. District Court, Central District of California

Awards

  • D.C. Pro Bono Honor Roll (2021, 2020)

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