Mark B. Chassman

Professional Experience

Mark B. Chassman is the founding and managing partner of Chassman LLP. He has decades of extensive litigation and trial experience representing clients in a variety of commercial and business lawsuits. Mark has tried dozens of jury trials, bench trials, and arbitrations to a verdict. He has been chosen for membership in highly selective invitation only trial lawyer organizations. Mark understands that tenacity, focus, and precision are essential to the successful outcome of a lawsuit.

Practice Areas

• Business & Commercial Litigation
• Corporate Litigation
• Partnership Litigation
• Product Liability
• Professional Negligence
• Real Estate Litigation
• Sexual Harassment & Employment Discrimination
• Trade Secret Litigation
• Trial Litigation


• Loyola Law School
(J.D., 1985)
• California State University, Northridge
(B.S., Cum Laude, Business Administration, emphasis in Finance and Real Estate, 1982)


  • The State Bar of California
  • The State Bar of the District of Columbia
  • The State Bar of New York
  • United States District Court
  • Central District of California
  • Northern District of California
  • Southern District of California
  • Eastern District of California


• Associate, American Board of Trial Advocates (ABOTA)
• Member, Multi-Million Dollar Advocates Forum
• Member, Million Dollar Advocates Forum
• Named as Southern California Super Lawyer
• Selected as a mediator for the Los Angeles Superior Court
• Selected as a mediator by the United States District Court, Central District of California