Intellectual Property Code
Section 29. First to File Rule. - If two (2) or more persons have made the invention separately and independently of each other, the right to the patent shall belong to the person who filed an application for such invention, or where two or more applications are filed for the same invention, to the applicant who has the earliest filing date or, the earliest priority date. (3rd sentence, Sec. 10, R.A. No. 165a.)