About

Caleb Mason is an accomplished trial and appellate attorney with a proven record of success in complex criminal and civil litigation. Based in Los Angeles, he brings over 15 years of experience handling high-stakes cases in both federal and state courts across the country. From investigation through trial and appeal, Mason represents clients with precision and dedication, drawing on his background as a former Assistant U.S. Attorney in the Southern District of California.

Mason holds a B.A. from Colby College (1995), a Ph.D. from Columbia University (2001), and a J.D. from Georgetown University Law Center (2005), where he served as Editor-in-Chief of the Georgetown Law Journal.

After law school, Mason clerked for Judge D. Michael Fisher on the U.S. Court of Appeals for the Third Circuit. Since then, he has built a respected legal career focused on trial and appellate advocacy. He has argued before courts at every level and frequently handles complex legal issues involving civil rights, criminal defense, and constitutional law.

Mason is widely recognized as a thought leader in criminal justice. He has authored dozens of published articles and is a frequent commentator in print and on television. In addition to his legal writing, he is the author of Stand Up for Bastards, a crime novel praised for its insight into the legal system.

As part of his public service, Mason served two terms on the City of Claremont Police Commission and has acted as a Judge Pro Tempore in the Los Angeles County Superior Court since 2017. He is an active member of the Ninth Circuit’s Criminal Justice Act and Pro Bono panels, where he has represented numerous indigent clients in criminal, immigration, and civil rights matters.

With experience as a federal prosecutor and defense attorney, Caleb Mason offers comprehensive legal representation and clear guidance in complex, high-stakes cases. His career reflects a strong commitment to justice, scholarship, and client advocacy.

Law Office Affiliations

  • Partner, Werksman Jackson & Quinn LLP
  • Member, State Bar of California
  • Member, United States Court of Appeals for the Ninth Circuit, Criminal Justice Act and Pro Bono panels

Licensed State

  • California

Education

  • University of Southern California Law Center
    Juris Doctor (JD)
  • Columbia University
    Doctor of Philosophy (PhD)
  • Colby College
    Bachelor of Arts (BA)

Awards & Badges


United States Court of Appeals for the Third CircuitU.S. District Court Southern District of CaliforniaLos Angeles County Superior CourtNinth Circuit Court of Appealsstate bar of california
  • Appeals
  • Child Abuse
  • Domestic Violence
  • Credit Card Fraud
  • Tax Fraud and Tax Evasion
  • Drug Crime
  • DUI and DWI
  • Sex Crime
  • White Collar Crime
  • Gun Law
  • Health Care
  • Internet
  • Sexual Harassment

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