Orange County business litigator

Law Offices of William D. Chapman

Business Litigation Attorney


Passionate advocacy for businesses

I am passionate about representing my clients' interests. With almost 35 years of experience I have advocated my clients positions in a broad range of business disputes including settlement negotiations, mediations, arbitrations, trials and appeals in Northern and Southern California as well as throughout the United States.

William D. Chapman has defended and recovered multimillion dollar jury verdicts and settlements for clients in state and federal courts in California and nationwide. Every year since 2009, Mr. Chapman has been selected for inclusion in the prestigious California Super Lawyers list (only 5% of all lawyers in the state are selected).

Super Lawyers, a Thomson Reuters business, makes its selections through a "patented multiphase process" that includes the review and evaluation of all candidates by a distinguished "Blue Ribbon Panel" of lawyers. Mr. Chapman has also been recognized for his success as a trial lawyer by the Litigation Counsel of America as a "Fellow," an honor limited to less than 1/2 of 1% of all lawyers in America.




114 Pacifica, Suite 450               Irvine, CA 92618

(949) 754-4723


Areas of Practice


Few business litigation lawyers in Southern California have spent more hours in complex jury trials and with a greater track record than Mr. Chapman.

Breach of Commission Agreement

A franchise finance firm retained Mr. Chapman to represent them against a major bank in a breach of commission case. The case was taken to a binding arbitration before a retired Appellate Court Justice who awarded Mr. Chapman's client $1.1 million.

Breach of Contract

Mr. Chapman was co-lead trial counsel representing and Orange County product designer in a breach of contract case against a Chinese contract manufacturer. After a multi-month jury trial, the jury came back with a verdict in favor of Mr. Chapman's client for $10 million.

Professional Liability

A Sacramento law firm retained Mr. Chapman to represent it in a legal malpractice suit in Federal Court brought by the insurance company that hired the firm to represent its insured. Damages were claimed in excess of $1 million. The jury returned a defense verdict in favor of Mr. Chapman's client.


Mr. Chapman was co-lead trial counsel in a jury trial in San Jose Superior Court which spanned 2 months. He represented a Brazilian distributor of software against a San Jose-based publicly traded software company. While the jury was deliberating, the defendant agreed to pay a $7.75 million settlement prior to hearing the jury's verdict.

Ostensible Authority

Mr. Chapman was retained to represent a corporation in defense of a multi-million dollar lawsuit on a contract claim. Mr. Chapman argued that the corporate officer signing the contract acted in excess of his authority. A defense judgment was entered in favor of Mr. Chapman's client.


Justice Is Truth in Action
— Benjamin Disraeli


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