The law strongly presumes that a child conceived or born during a valid marriage is legitimate, that is, the child of the mother's husband. This presumption is one of the strongest in law and is founded on public policy favoring the legitimacy of children and the stability of the family. It stands even if the mother declares against the child's legitimacy or is later convicted of adultery. The presumption can only be overcome (impugned) on specific grounds and by the proper party — generally only the husband (or, in limited cases, his heirs) — within a short prescriptive period. A child is also presumed legitimate if born within a set period after the termination of the marriage. This is why questions of paternity in a marriage are not casually raised or resolved.
Who is the legal father of a child born during a marriage? The law gives a powerful answer through the presumption of legitimacy.
The Presumption
A child conceived or born during a valid marriage is presumed legitimate — that is, presumed to be the child of the mother's husband. This is one of the strongest presumptions in Philippine law.
Why the Law Favors Legitimacy
The presumption rests on public policy:
- It protects the child from the stigma and disadvantages of illegitimacy;
- It promotes the stability of the family; and
- It discourages inquiries into the intimate conduct of spouses.
How Strong Is It?
Very strong. The presumption stands even if:
- The mother declares against the child's legitimacy; or
- The mother was convicted of adultery.
Neither the mother's statement nor her infidelity, by itself, defeats the child's legitimacy. Something far more is required.
Children Born After the Marriage Ends
A child is also presumed legitimate if born within a set period (generally 300 days) after the termination of the marriage (by death, annulment, or nullity), reflecting the normal period of gestation. Special rules apply if the mother remarries within that window.
Only the Proper Party Can Challenge It
The presumption can be overcome only by impugning legitimacy, and only:
- On specific grounds the law allows (mainly physical impossibility of the husband's access, or, in limited modern cases, biological/scientific proof);
- By the proper party — generally only the husband (or his heirs in limited situations); and
- Within a short prescriptive period.
Even the child, the mother, or third persons generally cannot attack the legitimacy of a child born in a valid marriage.
Practical Takeaways
- A child conceived or born during a valid marriage is presumed legitimate;
- The presumption is very strong — it survives even the mother's own declaration or a conviction for adultery;
- It can be challenged only by the husband (or limited heirs), on specific grounds, within a short period.
Frequently Asked Questions
Who is presumed to be the father of a child born during marriage? The mother's husband. A child conceived or born during a valid marriage is presumed legitimate, that is, the child of the husband. This is one of the strongest presumptions in law.
Can the mother's admission defeat the presumption of legitimacy? No. The presumption stands even if the mother declares against the child's legitimacy or is convicted of adultery. Neither, by itself, defeats the child's legitimate status.
Is a child born after the marriage ends still presumed legitimate? Yes, if born within a set period (generally 300 days) after the termination of the marriage, reflecting the normal period of gestation. Special rules apply if the mother remarries within that window.
Who can challenge a child's legitimacy? Generally only the husband, or his heirs in limited cases, on specific grounds and within a short prescriptive period. The child, the mother, or third persons generally cannot impugn it.
This commentary is for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, please consult a licensed attorney.
If you have questions about your rights or options under Philippine law, our firm is available to assist. You may reach us via Viber or WhatsApp, call us at 0995 433 5550, or send an email to vivasnobles@gmail.com. We look forward to hearing from you.