Property Registration Decree (PD 1529)
Section 16. Non-resident applicant. If the applicant is not a resident of the Philippines, he shall file with his application an instrument in due form appointing an agent or representative residing in the Philippines, giving his full name and postal address, and shall therein agree that the service of any legal process in the proceedings under or growing out of the application made upon his agent or representative shall be of the same legal effect as if made upon the applicant within the Philippines. If the agent or representative dies, or leaves the Philippines, the applicant shall forthwith make another appointment for the substitute, and, if he fails to do so the court may dismiss the application.