James M. Kosareff

An experienced estate planning lawyer, James Kosareff is a Partner at Copenbarger & Copenbarger LLP and leads the Trust Administration and Probate Section. With over 20 years in the legal field, James offers expert counsel in probate and trust matters, helping clients navigate complex legal processes. His practice spans multiple offices, including Santa Ana, Temecula, and San Jose.

James earned a B.S. from California State Polytechnic University and a J.D. from Western State University. An LL.M. in Taxation from Chapman University further bolstered his expertise in estate planning, probate law, and tax law. This combination of academic qualifications equips James to address multifaceted legal issues for clients facing estate administration challenges.

Admitted to the California Bar in 1994, James holds certification as a Specialist in Probate, Estate Planning, and Trust Law from the State Bar of California. Additionally, James is authorized to argue cases before the Ninth Circuit and is an active member of the State Bar and the Orange County Bar Association’s Trust, Estate, and Tax Law Sections. These professional credentials reflect his deep commitment to mastering his practice areas.

Known for his compassionate approach, James Kosaref guides clients through the often difficult probate and trust processes with clarity and understanding. He frequently represents clients in court, ensuring their interests are effectively protected. By offering personalized legal advice, James helps families confidently navigate the emotional complexities of estate administration. Recognition such as “Top Attorneys of North America” and “Legions of Honor” highlights James’s legal expertise. His dedication extends to community involvement, particularly with the Kiwanis Club of Huntington Beach.

Law Office Affiliations

• Partner, Copenbarger & Copenbarger LLP
• Member, State Bar of California Trust, Probate, and Estate Planning Section and Tax Law Section
• Member, Orange County Bar Association, Trusts and Estates Section and Tax Law Section
• Member, Kiwanis Club of Huntington Beach

Licensed State

• California

Education

• Chapman University School of Law
  Master of Laws (LLM)
• Western State University
  Juris Doctor (JD)
• California State Polytechnic University
  Bachelor of Science (BS)

Awards & Badges