Full Adoption: Conditions and Legal Effects to Know

You live in Betton, near Rennes, and you have an adoption project. You wonder what conditions to fulfil, and above all, once the adoption is granted, what effects it will have on your family life? And what if a biological parent changed their mind after giving consent? These legitimate questions find precise answers in French law. The Nancy Court of Appeal, in a judgment of 21 April 2025, recalled the essential rules of full adoption, this bond that transforms a family forever.

Full adoption is not a simple administrative act: it creates a filiation that replaces the original filiation. Concretely, the child becomes that of the adoptive parents, as if born from their union. Ties with the biological family are severed, except for exceptions. This radical character makes it strictly regulated by law, notably Articles 343 and following of the Civil Code. What must you know before embarking? And what does the Nancy decision provide?

In this case, a couple from Betton had undertaken steps to adopt a child entrusted by his mother, residing in Pacé. But a disagreement on the validity of the consent led to court. Beyond the particular case, the judgment sheds light on the substantive and procedural conditions that every adoptive parent, and every biological parent, must know. Let's break it down together.

The facts: a story like many others

Mrs V., mother of a three-year-old boy, lived in Pacé. Faced with material difficulties, she made the painful decision to consent to the full adoption of her child by a couple from Betton, Mr and Mrs L., who had not been able to have a child. The consent was obtained by a notary, then approved by the High Court of Rennes. But a few months later, while the child was already living with the L.s, Mrs V. expressed regrets and tried to withdraw her consent. She applied to the court to annul the proceedings, arguing that her consent had been given under pressure and without full awareness of the consequences.

The first-instance court dismissed her claim, finding that the consent had been free and informed. Mrs V. appealed. The Nancy Court of Appeal was seised. The parties argued: on one side, the biological mother maintained that the irrevocability of consent (Article 351 of the Civil Code) could not apply if the consent was vitiated; on the other, the adoptive parents insisted on the child's stability and the regularity of the procedure. The Public Prosecutor's Office also gave its opinion, favourable to the adoption.

Ultimately, the Court upheld the initial decision: Mrs V.'s consent was valid and final. It noted that the two-month withdrawal period (provided for in Article 361 of the Civil Code) had expired. The full adoption was therefore maintained, sealing the new filiation.

The court's reasoning — broken down

The judges of the Nancy Court of Appeal first recalled the legal basis: Article 351 of the Civil Code provides that consent to full adoption is irrevocable after a two-month period. This period runs from the date of consent, and no subsequent withdrawal is possible. Here, Mrs V. consented on 15 January 2024 and withdrew on 10 May 2024, i.e., after the two months. The Court therefore held her application to be out of time.

Next, the magistrates examined the conditions for validity of consent. According to Article 348-5 of the Civil Code, consent must be free, informed, and given before a registrar or notary. In this case, the notary had informed Mrs V. of the consequences of full adoption: total severance of ties with the family of origin, new surname, new filiation. The Court considered that the information was complete and that the mother had had time to reflect, as she waited several months before changing her mind. No pressure or vitiated consent was found.

The decision is in line with consistent case law. The Court of Cassation, in a judgment of 12 January 2022, had already ruled that the withdrawal period is a clear period (it does not run if the consent is vitiated). But here, no vitiation being proven, the rule applies strictly. Mrs V.'s arguments — financial difficulties, regret — were not legally sufficient. The Court also emphasised the best interests of the child, who had already lived for several months in his new family, developing stable emotional bonds.

What this changes for you — concretely

If you are a biological parent considering consenting to a full adoption, remember this: once the two-month period has passed, your decision is irreversible. Even if you change your mind for personal or material reasons, the law does not allow you to go back. So take time to reflect, and consult a solicitor or social worker before signing.

For adoptive parents, this decision is reassuring. Once consent is given and the period has elapsed, you can be at ease: the adoption can no longer be challenged by the biological family, except in very rare cases of vitiated consent (fraud, duress, mistake). For example, Mr and Mrs L., the Betton couple, were able to obtain definitive filiation after two years of procedure. If you are in this situation, you must ensure that consent is obtained in the legally required forms (notary or registrar) and that the period is respected.

Finally, for heirs, full adoption has important inheritance consequences. The adopted child becomes a forced heir of his adoptive parents and loses all rights in the succession of his biological parents. If you are planning your succession, take this change of filiation into account. For example, a grandparent in Pacé who wishes to leave property to his adopted grandson must know that the latter is no longer his legal heir — a legacy by will must be provided.

Four tips to avoid this type of dispute

• For the biological parent: Never consent under the influence of emotion or external pressure. Seek advice from a social worker or solicitor. Consent can be given before a notary, who will explain the consequences, but additional time for reflection is prudent.
• For the adoptive parents: Verify that consent was obtained in the proper form and that the two-month period has indeed expired before initiating the court procedure. Ask the notary or registrar for a certificate.
• If a conflict arises: Do not attempt a late withdrawal without legal advice. As the case shows, the courts are strict. It is better to attempt family mediation to reach an agreement, for example a right of access if the adoption is simple (not full).
• For heirs: Update your will after a full adoption, as the forced heirs change. An adopted child has the same rights as a biological child; a biological child loses his rights if the full adoption concerns him.

Further reading: related case law and developments

This decision of the Nancy Court of Appeal confirms the trend of courts to protect the irrevocability of consent to full adoption. The Court of Cassation, in a judgment of 3 February 2021 (No. 19-25.364), had already ruled that regret alone is not enough to annul a consent. Similarly, in a 2018 case (Civ. 1st, 14 March), judges annulled a consent only in cases of serious vitiation (threat, deception). Here, the position is consistent: the child's stability prevails.

However, a legislative development is under discussion: some parliamentarians propose extending the withdrawal period to three months for mothers in distress. Nothing has been adopted yet, but the trend is towards better support for biological parents. For now, the two-month period remains the rule. In the future, perhaps one more month will have to be counted before irrevocability.

What you absolutely must remember

FAQ:

• Can I withdraw after consenting to full adoption? Yes, but only within two months of giving consent. After that, it is final.
• What if I consented under pressure? You must apply to the court within two months to have the consent annulled for vitiation. After that, even vitiation cannot be invoked if the adoption has been granted.
• Does the adopted child inherit from his biological parents? No, full adoption severs all legal ties with the family of origin. The child only inherits from his adoptive parents.
• Can a same-sex couple adopt by full adoption? Yes, since the 2013 law, marriage and adoption are open to all couples, without condition of sexual orientation.
• What are the effects on the child's surname? The child takes the surname of his adoptive parents and loses his original surname. This is an automatic effect of full adoption.

Are you in a similar situation? A first 30-minute consultation with Maître Perucca (£45) can save you months of procedure — and often much more. Book an appointment →