Experienced Father-Son Legal Team Resolving Complex Litigation Cases In California, Colorado, And Across The Nation

At William A. Cohan, P.C., our father-son legal team tackles the most challenging and complex litigation cases. They are committed to delivering innovative and tailored solutions in business and commercial disputes, tax litigation and white collar criminal defense.

Serving Clients In Complex Controversies Throughout The United States

Practice Areas

Business & Commercial Disputes

Tax Litigation

White Collar Criminal Defense

A Boutique Law Firm Delivering Tailored Services And Innovative Legal Strategies

The Cohan & Cohan Law Firm (doing business as William A. Cohan, P.C.) has
successfully litigated complex white-collar cases, both civil and criminal, in half of the 94 US District Courts and in California, Colorado, Hawaii, and Texas state courts.  We’ve also litigated in most of the U.S. Courts of Appeals and the U.S. Supreme Court.  Cohan & Cohan Law Firm is devoted to resolving major controversies: fighting for freedom and protecting property and valuable rights in complex criminal and civil cases.  We punch well above our weight by partnering with firms in California, Colorado, Texas, and Washington to create teams needed to win big cases.

Clear Guidance For Tax Litigation

Our attorneys at William A. Cohan, P.C., assist in negotiating agreements with tax authorities, such as structuring payment plans and obtaining penalty reductions. They prepare and file all the necessary legal documentation for each case, providing ongoing support during uncertain times. Should a case go to trial, our attorneys are fully prepared to protect our clients’ interests and rights by developing personalized and effective legal strategies to defend them against accusations of tax noncompliance. Attorneys William A. Cohan and Gabriel L. Cohan have defended and prosecuted several hundred complex civil and criminal cases in the federal trial and appellate courts throughout the U.S.

Testimonials

“I have two matters during the past ten years with the Cohan firm which accurately represents their level of professional accomplishment. I saw aggressive and meaningful strategy and tactics skillfully applied by the Cohan firm to achieve the best possible result for the clients; in spite of the legal difficulties and fabrications which came from sophisticated defendants who resisted a truthful and fair outcome with behavior that was profoundly corrupt and deceitful.”

 

Meet Your Legal Team

William A. Cohan

William A. Cohan

Mr. Cohan has enjoyed a successful career as a criminal defense lawyer and civil litigator.

Gabriel L. Cohan

Gabriel L. Cohan

Gabriel Cohan is an attorney licensed to practice law in the State of California.

Effective Criminal Defense In White Collar Crime Cases

A legal team delivering trusted advice and litigating successfully for over 40 years.

Martindale-Hubbel AV Preeminent | Peer Rated for Highest Level of Professional Excellence | 2025