IN-PERSON APPLICATION. Get started on applying for registration of trademarks in 3 easy steps.Chapter covers common issues in trade mark laws and regulations including legislation, application, refusal, opposition and registration. Intake Form for Trademark Renewal and Maintenance. The "Made in Clark Philippines" certification mark has secured official registration with the Intellectual Property Office of the Philippines (IPOPHL). Trademark registration is valid for ten years from the registration date. The Intellectual Property Office of the Philippines (Ipophl) has received from Clark Development Corp. A trademark registration in the Philippines is necessary to enforce certain trademark rights, such as the right to stop and prevent trademark infringement. The Intellectual Property Office of the Philippines (Ipophl) has received from Clark Development Corp. In trademark law, the reasonable person plays a different role.