Sandler, Jonathan C.

Jonathan Sandler is in his element in front of a jury or a judge. An experienced trial litigator, he is a vigorous advocate for his clients’ interests who knows when and how to take a case to trial. Jonathan is well versed in complex commercial litigation and specializes in business, consumer protection, healthcare, real estate, negligence, fraud and employment matters. Jonathan not only represents clients in litigation, but counsels his clients on upcoming litigation issues and trends.

With numerous jury and court trials completed throughout Southern California, he has litigated a wide range of matters. These matters include business disputes, consumer protection matters, water disputes, employment disputes, trade secret disputes, real estate disputes involving commercial properties, residential properties and neighboring properties, and health care disputes involving managed care liability, first- and third-party health service contract disputes, payor/provider contracting disputes involving statewide agreements, and ERISA and Medicare preemption.  

Jonathan serves as the managing partner of Brownstein's Los Angeles office.

Practices & Industries
Trial Experience

Jonathan is a familiar figure in California courts, where he has been a successful advocate for both plaintiffs and defendants. He has served as lead counsel in a wide variety of matters, including trial and arbitration. He represents clients as the chief negotiator in mandatory settlement conferences and mediations, and has worked with multiple firm offices on coordinated legal representations, which have resulted in numerous favorable verdicts and cost-effective settlements.

  • Represented corporation in a federal court jury trial involving significant breach of contract action against party that refused to meet contractual obligations.

  • Represented company in binding arbitration related to finder’s fee litigation stemming from successful acquisition.

  • Represented municipal party in bench trial against resident in contested matter.

  • Represented property owner in a multi-week jury trial involving damage relating to the property’s natural resources.

  • Represented health plan in a seven week jury trial involving multi-party litigation seeking to hold managed care health plan liable for decisions made at the medical group and physician level.

  • Represented client in breach of contract and medical reimbursement arbitration.

  • Defended property owners in litigation alleging various types of discrimination, harassment, breach of contract and other tort based conduct.

  • Represented company in breach of contract litigation stemming from failure to pay for goods and services.

Consumer Protection & Class Action

Jonathan represents companies defending individual and class action claims spanning a variety of state and federal consumer protection related statutes and claims. His work involves a wide range of consumer and class issues ranging from meeting statutory labeling requirements, to fair debt collection practices act matters, to cases involving the Americans with Disabilities Act to data breach related claims.

  • Successfully represented an online social gaming company from California consumer class action litigation related to whether the existence and distribution of “free coins” within the platform caused the company to violate various penal code sections related to illegal gambling.  
  • Successfully represented natural food company in threatened class action matter involving claims of a “slack-fill” violation in a pre-litigation dispute alleging that more than 10 of the company’s products had more than double the amount permitted of un-useable space.
  • Successfully represented an industry leading company and its commerce chain in state wide class action alleging violation of Prop. 65.
  • Represented international electronics company in assessing exposure for violations of Prop. 65.
  • Represented cosmetic company in successful pre-litigation settlement of threatened nationwide class action regarding misleading branding of products.
  • Defended company in “Made in the USA” class action litigation.
  • Successfully resolved on an individual basis, a threatened class action against cosmetic company involving alleged false marketing materials, violations of FTC standards, representations required FDA approval and violation of the Consumer Legal Remedies Act.
  • Successfully represented international company in Prop. 65 class action involving multiple beauty industry related products.
  • Represent national loan servicing company in multiple loan related matters including FDCPA, FCRA, and other potential nationwide class actions.
  • Defended international beauty product company in state wide class action matter involving allegations that marketing representations required FDA approval and violated the Consumer Legal Remedies Act.
  • Defended national company in multiple TCPA class actions, including obtaining dismissal pre-litigation based upon affirmative showing of compliance.
  • Successfully represented international company in Proposition 65 class action.
Commercial Litigation

Jonathan is first and foremost a commercial litigator. Companies turn to Jonathan for virtually all business related disputes.  His experience as a strategic advisor to companies coupled with his proven capacity to take a case trial allows companies to make well-informed and astute business decisions related to litigation.

  • Defended California company in multiple lawsuits related to alleged officer sexual harassment and retaliation claims.
  • Represented hospitality company in defense of California based class action wage and hour case related to alleged failure to properly provide meal breaks and rest breaks.
  • Pursued former employee who embezzled money from corporation and obtained a significant judgment.
  • Represented music management company against former employee who took the company’s intellectual property and relationships.
  • Represented health related company in affirmative action against former employees who utilized contacts and trade names to establish rival company in territory.
  • Defend companies from third party invasive subpoenas.
  • Successfully represented technology company in trade secret litigation.
  • Represented national company in lawsuit stemming from the purchase of multiple multi-million dollar assets.
  • Successfully represented corporations in shareholder derivative lawsuit.
Additional Representative Matters


  • Drafted separation agreement and revised healthcare clinic policies for a Los Angeles based healthcare clinic where employees move between offices throughout the day and week.

  • Coordinated internal California based privileged investigation of tech-company in connection with alleged officer misconduct.

  • Serve as chief employment counsel for California based company with employee related issues from around the country, including but not limited to guidance on terminations, privacy actions, misconduct investigations, and policy development.

  • Represented healthcare clinic in pre-litigation wage and hour dispute related to alleged unpaid overtime, meal breaks and rest breaks.

  • Created all employment policies for New York headquartered, but national footprint company.

Health Care Litigation

  • Represented health plan in a seven week jury trial involving multi-party litigation seeking to hold managed care health plan liable for decisions made at the medical group and physician level.

  • Regularly represents health plans in first and third party health service contract disputes.

  • Successfully represented health plan in multiple ERISA actions.

  • Represented international health plan in litigation against state wide medical provider involving a contract dispute related to overcharges in the tens of millions of dollars.

Real Estate Litigation

  • Successfully represented commercial landlord in litigation against former tenant.

  • Successfully represented investor client in the partition of significant residential/commercial property with complicated potential profits analysis.

  • Prepared and filed lis pendens as means to enforce purchase agreement of multi-million dollar properties.

Water Litigation

  • Represented property owner in a multi-week jury trial involving damage relating to the property’s natural resources.

  • Representing a Central Coast corporation with significant water interest in litigation involving its right to sell water to whom it chooses.

News & Events
Publications & Presentations
  • J.D., 2003, Loyola Law School
  • B.A., 2000, Emory University
  • California
  • District of Columbia
  • U.S. District Court, Central District of California
  • U.S. District Court, Southern District of California
  • U.S. District Court, Northern District of California
  • U.S. District Court, Eastern District of California

Leaders in Law Nominee, Los Angeles Business Journal, 2019

Top Business Leader, LA 500, Los Angeles Business Journal, 2018


State Bar of California

Association of Southern California Defense Counsel

Los Angeles County Bar Association

Association of Business Trial Lawyers, Los Angeles

Beverly Hills Bar Association

Beverly Hills Chamber of Commerce