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About me

The Mauriello Law Firm, APC represents clients in business, consumer, investment, environmental, and other civil litigation in state and federal courts as well as arbitration forums. Founded in 1996 by attorney Thomas D. Mauriello, the Firm handles a wide variety of sophisticated and challenging legal matters, provided with personal attention and the highest standards of professionalism. The Firm is located in San Clemente, California, within close proximity to courts in Los Angeles, Orange County, San Diego, and Riverside County.


A primary area of the Firm's practice involves representing investors in investment and securities disputes with brokerage firms, investments advisors, securities issuers, and others, often in FINRA arbitration.


Another primary area of the Firm's practice involves represents consumers in consumer class actions, often involving fraudulent or deceptive services or products.


In addition, the Firm regularly represents individuals and businesses in commercial litigation, shareholder derivative actions, whistleblower and False Claims Act ("qui tam") cases, administrative law, appeals, public interest environmental and land use law, and commercial real estate law.


The Firm strives to deliver legal services and solutions in an efficient and cost-effective manner. A variety of billing arrangements are available, depending on the nature of the case. These include including hourly, contingency, modified contingency, and flat fee billing arrangements.


Thomas D. Mauriello is a member of the State Bars of California, New Jersey and Pennsylvania. He is a member of several national, state, and local bar associations. In addition to assisting clients, Mr. Mauriello aspires to give back to the community by regularly volunteering his time and expertise with various pro bono activities. He presently serves on several committees of the Orange County Bar Association as well as for many years served as Co-Chair of the Legal Committee of the Angeles Chapter of the Sierra Club.


Practice areas


  1. Litigation: 35%
  2. Investment Fraud: 30%
  3. Arbitration: 25%
  4. Administrative Law: 10%


Payment types:

Cash, Check, Credit card

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Contact info

Mauriello Law Firm, APC

1181 Puerta Del Sol
Suite 120
San Clemente, CA, 92673


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Association namePosition nameDuration
State Bar of California, Legislation Committee, Environmental Law SectionMember1995 - 1998
Bar Association of San FranciscoMemberN/A
Orange County Bar AssociationMemberN/A
Public Investors Arbitration Bar AssociationMemberN/A
Publication nameTitleDate
Los Angeles Daily Journal"Do No Harm"1995
San Diego Law Review"Onshore Oil and Gas Leasing on Public Lands: At What Point Does NEPA Require the Preparation of an Environmental Impact Statement?"1988
School nameMajorDegreeGraduated
University of San Diego School of LawLawJD - Juris Doctor1988
Brown UniversityN/ABA - Bachelor of Arts1983