We are guided by the passion of our founder, Ms. May Liou, to help our clients with every aspect of their professional and personal lives. We help our clients build new businesses, manage daily operations, and even expand to overseas markets. We are there to guide and advise small and large business clients alike whatever their goals and aspirations. We take great pride in helping our clients to fight for their rights in business litigation, family law, divorce, assets and probate disputes, and many other types of civil litigation cases. We go beyond the traditional scope of legal services. We see ourselves as not only providing efficient and quality legal services to solve problems, but also helping our clients to build a better business and life.

You can tell a lot about a law group by the people it employs, so we welcome you to meet our people:

Meet Our Team

May Liou, Esq. Founder

Ms. Liou established her private practice in 1986, and has been serving the SoCal community for almost 30 years...

James Green, Esq. Lawyer

Jamie has been a practicing litigation attorney for 20 years. Jamie has represented local, national, and international corporate...

Patricia Rayos, Esq. Lawyer

Patricia Rayos, Esq. has been working in the field of law for more than twenty years, practicing Family Law exclusively for over ten years....

Jerl Brandon Leutz, Esq. Lawyer

Brandon has extensive experience in business, Internet and technology litigation, intellectual property disputes, privacy torts, corporate law practice...

Karen Lu Senior Legal Assistant

Ms. Lu is a licensed Chinese attorney of ten years. Her expertise is in business contract, commercial litigation and real estate...

Jing Cao Senior Legal Assistant

After graduating with a law degree emphasis on International Economic and Trade Law from Dalian Maritime University in China...

Hanna ChangOffice Manager

California State University Northridge BA in Linguistics, Client Services Account Management, Bilingual Interpretation and Translation, Notary Public License.

Doris OuAdministrator

Masters of Laws from City University of Hong Kong and Vienna University; Administration and legal secretarial support; File maintenance and legal research.


It is truly a pleasure to have Castleton Law Group as my corporate counsel. During the last eight years, their legal expertise has helped my company through many challenges. As a business owner, I find constant need for Castleton Law's skills-in negotiating a lease, selling a business and in particular, labor laws. In the long run, their counsel saves me money and headaches, and helps make my business stronger.

Thomas J.

Castleton Law Group has been our corporate counsel for almost 20 years. They have been part of our team already. They help us with every aspect of the legal issue. Because they know our company really well, it saved us a lot of time and trouble. Whenever there is a legal issue, the first thing we do is to call our attorney.

Topocean Consolidation Services Inc.

My experiences with Castleton Law Group have been wonderful. When problems arise they are right there to figure a way to fix it. Going through a divorce is hard enough with stress, and your ex-spouse playing games. Having these lawyers who are understanding and who are there to help is a blessing.

Christina H. / Los Angeles, California

Castleton Law Group provided me with respect, compassion, and the confidence I needed to get a divorce. I have the highest regard for Castleton Law Group and have already referred a friend.

April H. / Rosemead, California

Before I talked to Mr. Green, I have spoken with many different lawyers. He is definitely one of the best. Instead of just talking jargon like most lawyers, he answered my questions in a way that I could understand. I got the feeling that he actually cared about my issues and wanted to make sure that the situation would work out well.

Ming L. / Taiwan

I had quite a number of questions about divorce and was directed to Ms. Liou by a good friend from school. She is very friendly, knowledgeable and thoroughly answered all questions I had. Her reply is very fast and she even went as far as to follow up and make sure everything was alright and if I had any other questions.

Susan C. / Arcadia, California

After I got the bad news of my brother passed away, I was in a great grief. My brother didn't have wife or children. I am his only family in the United States. I turned to Castleton Law for help. They explain the situation and the legal process patiently in each step. I felt very assuring. Because my work requires me to spent most of the time abroad, I really need responsible attorney to take care of my brother's estate.

Paul S. / Estate of Shieh

I was so relieved after the probate is over. Besides the emotional hardship towards my father's passing away, I also had financial hardship to pay off the taxes and debt. What's even worse is that my brother has not been cooperating with the sale of the house. Castleton Law is so great. They helped me to deal with my brother and assisted me with the sale of the house. I can't imagine how to handle with everything without them.

Jessie Y / Estate of Yang