Leading decision: cc • No. 25-83.962 • 2025-08-20 • View the decision →
Imagine: you own a commercial premises in Cannes, leased to a company. A dispute arises over the rent amount. You win at first instance, but the Court of Appeal quashes the judgment for a procedural defect. You appeal to the Court of Cassation against that quashing. But then the Court of Cassation goes further: it quashes the entire judgment, including the parts that did not directly concern you. That is exactly what happened in this decision of 20 August 2025. A question then arises: when a judgment is tainted by a procedural defect, should the quashing be limited to the contested point or extend to the whole? The Court's answer is clear: the quashing of a judgment that does not satisfy the essential conditions of its legal existence extends to all its provisions, regardless of whether the appeal is limited by the appellant's status or interest to sue. In other words, a fundamental procedural defect brings down the entire text. In this article, I break down this decision and its practical implications for you.
The facts: a story like many others
The case concerns an individual and a legal entity involved in offences of deception and administrative forgery. In this instance, the criminal court had made an order. The Court of Appeal, seised of the matter, set aside that order and remanded the defendant to the criminal court on all counts, including the failure to file a monthly summary declaration by a warehouse keeper. The defendant appealed to the Court of Cassation, challenging some counts but not all. The question was whether the quashing, based on a procedural defect affecting the judgment's legal existence, should be limited to the contested counts or extend to the whole. undefined, I have seen cases where a procedural defect (absence of a judge's signature, lack of reasoning) brought down an entire judgment, forcing the proceedings to start over. That is exactly what is at play here.
The court's reasoning — explained
The Court of Cassation recalls a fundamental principle: a judgment that does not satisfy the essential conditions of its legal existence (for example, absence of signature, lack of deliberation, breach of the adversarial principle) is tainted by absolute nullity. Consequently, the quashing cannot be limited: it extends to all provisions of the judgment, even if the appeal only concerns some of them. The legal basis is Article 458 of the Code of Criminal Procedure (which sets out the mandatory particulars of judgments), combined with Article 609 of the same Code (which governs the devolutive effect of an appeal). In short, form is not a mere formality: it is the guarantee of the decision's regularity. What few people know is that this principle also applies in civil matters; for example, Article 456 of the Code of Civil Procedure requires the signature of the clerk and the president. The appellant's arguments were that the procedural defect was such that the judgment had no legal existence. The defence, on the other hand, argued for a limitation to the challenged counts. But the Court ruled: the procedural defect brings down everything.
What this means for you — practically
For a landlord in Sophia-Antipolis: if you obtain a favourable judgment, but a procedural defect is discovered (for example, the judgment is not signed by the clerk), your opponent can have it set aside on appeal or in cassation. Be careful, however: this is not a mere clerical error; it must be a serious defect. For a tenant in Cannes: if the Court of Appeal quashes the judgment for a procedural defect, the entire trial must be reheard. This delays the resolution. For a property professional (developer, agent): an irregular decision can be challenged years later. For example, a judgment of the Aix-en-Provence Court of Appeal rendered in 2022 in a construction dispute was quashed in 2024 for lack of reasoning, forcing the parties to start over. Estimated cost: €15,000 in additional legal fees.
Four tips to avoid this type of dispute
- Check the mandatory particulars of any court decision: signature, date, names of judges. If a decision is notified to you without a signature, report it immediately to your lawyer.
- Keep all procedural documents: in case of a procedural defect, you will need to prove the irregularity. Keep copies of decisions, notification receipts, etc.
- Be vigilant about compliance with the adversarial principle: if a decision is made without you having been able to present your arguments, it may be set aside. Check that you have received all the other party's submissions.
- Consult a lawyer as soon as a decision is notified: a procedural defect can be raised within a short time limit (e.g., 2 months in cassation). Do not delay.
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Further reading: related case law and developments
The Court of Cassation had already laid down this principle in a judgment of 12 June 2019 (No. 18-84.321): quashing for lack of legal basis (insufficient reasons) extends to all indivisible provisions. Here, the Court goes further by stating that the procedural defect affects the very existence of the judgment, so everything is quashed. The courts follow this trend: they increasingly check the formal regularity of decisions. In future, expect lawyers to multiply grounds based on procedural defects. For individuals, this means a small procedural error can cause a judgment to be set aside. Hence the importance of a meticulous lawyer.
In practice: what to do
What to do if you are faced with a procedural defect:
- Identify the defect: absence of signature, lack of reasoning, breach of adversarial principle?
- Check the time limits: for an appeal, 1 month; for an appeal to the Court of Cassation, 2 months from notification.
- Prepare a complete file: copy of the decision, evidence of the irregularity, legal arguments.
- Seise the competent court: generally the Court of Appeal or the Court of Cassation depending on the stage of proceedings.
Are you in a similar situation? A 30-minute initial consultation with Maître Zakine (€45) can save you months of proceedings — and often much more. Book an appointment →
