Atty. Castillo focuses on corporate, contracts, estate planning, and alternative dispute resolution matters. He is also a commissioned Notary Public and among the first lawyers commissioned as an Electronic Notary Public by the Supreme Court of the Philippines.
His work centers on resolving matters efficiently through negotiation, mediation, and arbitration where possible, rather than protracted litigation. He advises businesses and individuals on drafting and structuring contracts, planning estates, and arranging their affairs to reduce the risk of conflict before it arises.