Intellectual Property Code
Section 31. Right of Priority. . - An application for patent filed by any person who has previously applied for the same invention in another country which by treaty, convention, or law affords similar privileges to Filipino citizens, shall be considered as filed as of the date of filing the foreign application: Provided, That: (a) the local application expressly claims priority; (b) it is filed within twelve (12) months from the date the earliest foreign application was filed; and (c) a certified copy of the foreign application together with an English translation is filed within six (6) months from the date of filing in the Philippines. (Sec. 15, R.A. No. 165a)