Short answer. Yes. Legitimated children enjoy the same rights as legitimate children — the same successional share, the same rights to support and to the surname. And the effects retroact to the time of the child's birth, so the equality is not merely from the wedding onwards.

What the law says

Legitimated children shall enjoy the same rights as legitimate children.

Family Code, Article 179 — Legitimated Children Enjoy the Same Rights. Read the full provision →

Same rights means the whole set

The sentence is short because it is meant to be complete. There is no reduced version of legitimacy for a child who arrived before the wedding: the successional share is the legitimate child's share, not the smaller one the law gives illegitimate children, and the rules on parental authority, support and the use of the father's surname apply as they do to any legitimate child. A will or an extrajudicial settlement that treats a legitimated child as a lesser heir is proceeding on a distinction the Code does not recognise.

The effects reach backwards

The Code adds that the effects of legitimation retroact to the time of the child's birth, which is what makes the rule more than symbolic. The child is treated as having been legitimate all along, not as having been promoted on the day the parents married. That matters wherever a right depended on status at an earlier moment — most obviously in a succession that opened between the birth and the marriage, but also in claims to support for that period. Retroactivity is the part most often overlooked when families work out shares among themselves.

Legitimation has its own requirements

Equality of rights follows from legitimation; it does not establish that legitimation occurred. That is a separate question with its own conditions, and the parents' subsequent marriage is only part of it — the law also looks to the parents' situation at the time the child was conceived. So before relying on this article, be sure the child was in fact legitimated. Families sometimes assume a later marriage cured everything, when the circumstances were such that it could not.

It can be attacked, but not indefinitely

The Code allows legitimation to be impugned only by those who are prejudiced in their rights, and only within five years from the time their cause of action accrues. Both limits matter: a stranger with no interest cannot raise it at all, and a relative who has known of the situation for many years may find the period spent. Keep the parents' marriage certificate and the child's birth certificate together, and if the status is likely to be questioned in an estate, take those documents to a lawyer before the settlement is drawn rather than after.

Cases citing this provision

These Supreme Court decisions cite the provision above. We list them so you can read them yourself; the summaries of what each decided are not ours to give.

Related provisions

Note. Statute text quoted on this page is reproduced from the official enactment and is linked to the full provision. The explanation around it is general legal information from Vivas & Nobles Law Office, not legal advice. Whether it applies to your situation depends on facts only a lawyer reviewing them can assess.