Acts executed against the provisions of mandatory or prohibitory laws shall be void, except when the law itself authorizes their validity. (4a)
Civil Code · Preliminary Title
Chapter 1: Effect and Application of Laws
Current text, as of October 24, 2026
Acts executed against the provisions of mandatory or prohibitory laws shall be void, except when the law itself authorizes their validity. (4a)
Consolidated by Alleba from the text of Republic Act No. 386 (Lawphil and the Supreme Court E-Library). Book I provisions on marriage, family relations and parental authority were repealed by the Family Code (Executive Order No. 209, 1987) and are shown for reference only. For information and research only, and not legal advice. For certified copies, refer to the Official Gazette or the issuing agency.