Short answer. Yes. The action to claim legitimacy belongs to the child for their whole lifetime, and the death of a parent does not cut it off. What ends it is the death of the child, and even then the action passes to the heirs in two narrow situations.

What the law says

The action to claim legitimacy may be brought by the child during his or her lifetime and shall be transmitted to the heirs should the child die during minority or in a state of insanity. In these cases, the heirs shall have a period of five years within which to institute the action.

Family Code, Article 173 — Action to Claim Legitimacy. Read the full provision →

The clock runs on the child's life, not the parent's

The action may be brought by the child during his or her lifetime. That phrase sets the limit, and it is the child's lifetime that is meant. No period begins running when a parent dies, and no rule in this article requires the claim to be filed while the parent is alive to answer it. Claims of this kind commonly surface precisely because a parent has died and an estate is being settled. The practical difficulty then is evidentiary rather than legal, since the person best placed to confirm or deny the relationship is gone.

When the heirs may carry it on

If the child dies, the action does not simply pass to whoever stands to gain. It is transmitted to the heirs only should the child die during minority or in a state of insanity. The reasoning is that in both situations the child was never in a position to decide for themselves whether to sue. An adult of sound mind who lived a full life without bringing the action is taken to have made a choice, and the heirs cannot revisit it after the funeral. This is one of the most frequently misunderstood limits in filiation practice.

Five years, and only for the heirs

Where the action is transmitted, the heirs shall have a period of five years within which to institute the action. That period is theirs alone; it is not a limit on the child, who had a lifetime. Heirs who allow the five years to pass lose the action outright, however strong the underlying proof may be, and the period runs from the situation the article describes rather than from the day they learned of it. Anyone in that position should treat the date of the child's death as the fact that governs their timetable.

What the case will be built on

Status cases are won on documents that existed before anyone had a reason to manufacture them. The civil registry birth record and the parents' marriage certificate are the starting point, followed by anything contemporaneous in which the parent treated the child as their own: school records naming the parent, baptismal entries, letters, remittances, insurance or benefit designations. Where a parent has died, the estate's papers may also carry admissions worth having. Assemble that material in date order before consulting a lawyer, because its strength decides whether the claim is worth bringing at all.

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.