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Civil Code · filiation
Updated June 2026

🍼 Can I acknowledge my child?

With conditions
Quick answer

Yes, and it's sometimes needed to establish filiation. How filiation is established depends on the situation. For the mother, filiation is automatic as soon as her name appears in the birth certificate (giving birth is enough). For an unmarried father, you must acknowledge the child: acknowledgement can be done before birth (recommended), at the birth declaration, or later, at any town hall, on showing ID and proof. For a married couple, the presumption of paternity applies: the husband is presumed the child's father, with no step. Acknowledgement creates rights and duties (parental authority, maintenance, inheritance).

📋 The rules

  • Mother: automatic filiation (name in the birth certificate)
  • Unmarried father: acknowledgement needed (town hall)
  • Acknowledgement possible before, at, or after birth
  • Married couple: presumption of paternity (husband presumed father)
  • Creates rights and duties (parental authority, maintenance, inheritance)

🔓 Exceptions

  • Fraudulent acknowledgement (of convenience): voidable and punished
  • Contesting paternity: court action possible, framed deadlines
  • Assisted reproduction/surrogacy: specific filiation rules

⚠️ Penalties & fines

A fraudulent acknowledgement ('acknowledgement of convenience', e.g. to obtain a residence permit) can be annulled and is an offence. Conversely, not acknowledging your child (for an unmarried father) deprives the child of paternal filiation and the related rights, and doesn't exempt you from obligations if paternity is established by a court. Filiation can be contested or established by court action, within framed deadlines.

📎 Official sources

Last verified: 2026-06-20

❓ Frequently asked

Does the mother have to acknowledge her child?

No, in principle. For the mother, filiation is established automatically once her name appears in the birth certificate. Giving birth, recorded in the certificate, establishes maternal filiation.

Must the father acknowledge the child?

Yes, if he isn't married to the mother. Acknowledgement is done at the town hall, ideally before birth, or at the declaration, or later. For a married couple, the husband's paternity is presumed, with no step.

When to acknowledge your child?

Before birth (anticipated, recommended), at the birth declaration, or any time after. Anticipated acknowledgement secures paternal filiation from birth, notably in case of the unexpected.

What rights does acknowledgement create?

It establishes the filiation bond and its effects: parental authority, maintenance duty, inheritance rights, possible passing of the name. It therefore engages rights and duties towards the child.

Can an acknowledgement be contested?

Yes, by court action, within framed deadlines, if filiation doesn't match reality. A fraudulent acknowledgement (of convenience) can be annulled and is a criminally punished offence.

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