The Mauriello Law Firm, APC is a professional law corporation devoted to excellence in representing its clients in business, consumer, investment, environmental, and other civil litigation. Founded in 1996 by attorney Thomas D. Mauriello, the Firm primarily handles commercial litigation, including consumer cases, securities and investment matters, class actions, shareholder derivative actions, and customer-brokerage firm arbitrations. The firm handles matters in state and federal courts as well as arbitration forums. The firm has represented a wide variety of individuals, businesses, corporations, associations, and institutional clients.

In addition to commercial litigation and arbitration, the Firm's practice includes whistleblower (False Claims Act) cases, administrative law, appeals, environmental and land use law, and commercial real estate law. A more detailed description of the Firm's practice can be found in the "Practice" section of this site.

The Firm's primary office is located in coastal San Clemente in Southern Orange County, California, bordering San Diego County. This office is within an hour's drive of courts in Los Angeles, Orange, San Diego, and other Southern California counties where the Firm has cases and clients. The Firm also maintains an office in San Francisco to serve clients and handle matters in the Bay Area.