Civil Code of the Philippines: RETROACTIVITY OF LAWS Art. 4.

 RETROACTIVITY OF LAWS Art. 4. Laws shall have no retroactive effect, unless the contrary is provided. (3)
General Rule: All statutes are to be construed as having only prospective operation
Exceptions (1) When the law itself expressly provides Exceptions to Exception: (a) Ex post facto law
(b) Impairment of contract (2) In case of remedial statutes (3) In case of curative statutes (4) In case of laws interpreting others (5) In case of laws creating new rights [Bona v. Briones (1918)] (6) Penal Laws favorable to the accused

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Claudelyn santos
3 months ago

Very helpful!