Castillo Laman Tan Pantaleon & San Jose counsels both local and international clients in all aspects of Philippine law. The firm excels in both advisory and implementation work, provides efficient, value-added legal service and assists multi-sectoral clients in understanding Philippine law and implementing their objectives.

Through the years, the firm has structured itself to meet the complex needs of clients in the rapidly evolving Philippine environment by carefully ensuring a high level of client involvement and professional legal expertise, encompassing a broad range of capabilities in practically every business area.



The firm was founded in 1981 by a group of lawyers with the vision of establishing a highly professional, dynamic, and full service legal practice. Originally named Castillo Laman Tan and Pantaleon, the firm was formed with seventeen (17) lawyers.

Gregorio R. Castillo (Founding partner 1981-1992,deceased), Noel A. Laman, Ancheta K. Tan and Polo S. Pantaleon, the name and founding partners, were former partners of a major Philippine law firm.

In 1995, Roberto V. San Jose, a distinguished corporate law practitioner, joined the firm. Since then, the firm has been renamed Castillo Laman Tan Pantaleon & San Jose.

Today, the firm has more than 50 lawyers, a number consistent with its growth philosophy of judicious expansion. It has a support staff consisting of paralegals and administrative and accounting personnel, including a management information system team.