About
Patrick J. Monahan is the founder of Desert Valley Law, PLLC and a Glendale business and estate attorney. He advises business owners and families on business law, contract drafting, company transitions, succession planning, estate planning, and related disputes. His practice includes business transactions, business litigation, real estate and construction litigation, wills, trusts, and powers of attorney. He focuses on practical planning that protects business interests, family assets, and long-term ownership goals.
Monahan earned a J.D. from the University of Tulsa College of Law with honors and served as an editor of the Tulsa Law Review. He was a member of Phi Delta Phi Legal Honors Fraternity. He earned a B.S. from Arizona State University summa cum laude, where he received a Regents Merit Scholarship and served as vice president of Alpha Phi Sigma Criminal Justice Honor Society. His academic work developed a strong base for legal analysis and business planning.
Monahan began his legal career handling civil and commercial litigation before becoming a partner at Monahan Moorhead, PLC and later establishing Desert Valley Law. His background includes service with the Arizona Attorney General’s Office and the US Department of Veterans Affairs. He now works with clients on business formation and disputes, contracts, sales and purchases, ownership transitions, succession issues, and estate plans designed to coordinate business and family objectives.
Patrick J. Monahan is admitted to the State Bar of Arizona and the US District Court for the District of Arizona. He belongs to the American Bar Association, the State Bar of Arizona, and the Maricopa County Bar Association. His professional background combines litigation, government service, business counseling, and estate planning, giving clients a broad perspective when legal decisions involve ownership, contracts, property, succession, and long-term asset protection.
Law Office Affiliations
- Attorney, Desert Valley Law, PLLC
- Member, State Bar of Arizona
- Member, American Bar Association
- Member, Maricopa County Bar Association
Licensed State
- Arizona
Education
- University of Tulsa College of Law
Juris Doctor (JD) - Arizona State University
Bachelor of Science (BS)
Awards & Badges



- Business
- Business Litigation
- Construction & Development
- Contracts & Agreements
- Corporate & Incorporation
- Employment
- Estate Planning
- Intellectual Property
- Lawsuits & Disputes
- Licensing
- Limited Liability Company (LLC)
- Litigation
- Power of Attorney
- Property Disputes
- Real Estate
- Trade Secrets
- Trusts
- Wills & Living Wills





