“Jay Spillane is a trial-first business litigation lawyer trusted for high-stakes commercial disputes where outcomes truly matter. Known for relentless preparation and decisive courtroom advocacy, he brings clarity, leverage and confidence to bet-the-company cases, ensuring clients are never forced into compromise by anything less than full trial readiness.”

Fantastic Lawyers® Editorial, 2026

Jay Spillane is a leading commercial litigation attorney in California and the founder of Spillane Trial Group PLC, a litigation firm devoted exclusively to business trials. He represents companies, executives and private clients in complex, high-value disputes where outcomes truly matter.

Unlike firms that focus primarily on pretrial motion practice or early settlement, Jay approaches every case with a singular objective: winning at trial. This disciplined, trial-first mindset not only prepares cases for decisive courtroom victories, but often drives stronger settlements when resolution is possible.

What Jay Spillane Does

Jay focuses exclusively on commercial litigation and business trials. He represents both plaintiffs and defendants in state, federal and bankruptcy courts, as well as arbitration and administrative proceedings. His practice is built around complex disputes that demand deep preparation, strategic clarity and confident courtroom advocacy.

Clients regularly turn to Jay for “bet-the-company” matters, including disputes involving company control, fiduciary duties, professional negligence and high-value commercial conflicts across a wide range of industries.

Why He’s Different

Jay Spillane is known for focused, aggressive advocacy and a rare commitment to trial readiness. Every case is prepared as if it will be tried, creating leverage at every stage of litigation and ensuring clients are never forced into unfavourable settlements due to lack of preparation.

Spillane Trial Group is also frequently engaged late in proceedings, stepping in when cases need to be taken decisively through trial. Jay’s ability to quickly master complex records and sharpen trial strategy has made him a trusted choice in high-pressure situations.

Practice Areas

• Commercial and Corporate Disputes
• Entertainment Litigation
• Technology and Intellectual Property Disputes
• Shareholder and Company Control Disputes
• Legal and Professional Malpractice
• Real Estate Litigation
• Securities and D&O Liability
• Bankruptcy-Related Disputes
• Professional Sports Law
• Family Wealth and Trust Disputes

Experience & Approach

Based in California, Jay tries cases nationwide in collaboration with local counsel and regularly manages multi-jurisdictional litigation involving parallel actions and multiple legal teams. He is experienced in handling matters from inception through verdict, as well as taking over cases at critical late stages.

Jay typically acts on competitive hourly rates, with select high-stakes business matters considered on a contingency basis where appropriate.

Location & Contact

Jay Spillane serves clients throughout California and nationwide and is currently accepting new commercial litigation matters.

Phone: 424-347-8199 Office: 15260 Ventura Boulevard, Suite 840, Sherman Oaks, CA 91403