Final Damage: When the Loss is Fixed, It Cannot Be Reopened in Court

Imagine: you own a small building in Abbeville. A tenant is injured in the common parts, and you are found liable. The court fixes his loss at €10,000, you pay, the case is closed. Two years later, the same tenant comes back to claim an additional €5,000 for further treatment related to the same injury. Can you be ordered to pay a second time? The answer is no, unless an exception applies. This is what the Court of Cassation reminded in a landmark judgment of 7 April 1976.

This decision, although old, remains highly relevant for any property professional or individual faced with a dispute. It establishes an essential rule: the damage is finally determined as at the date of the judgment. Once the judge has decided, the victim cannot reopen the case to obtain more, unless their condition worsens or a hidden loss appears afterwards. What does this mean in practice for a landlord in Montdidier, or for a tenant in Amiens? Let's delve into this decision.

This rule, known as the "principle of final determination of loss", is a double-edged sword. On the one hand, it protects the responsible party (you, your insurer) against indefinite claims. On the other hand, it requires the victim to present all their losses at the first hearing, on pain of being unable to claim them later. The 1976 judgment also clarifies that "reservations" made in a judgment for future benefits do not allow the amount already fixed to be revisited. A crucial point for social security funds and insurers.

The Facts: A Story Like Many Others

We are in Strasbourg, in the 1970s. A Mr Koenig is the victim of an accident, for which a third party, Mr Andres, is responsible, insured by the company La Participation. Koenig's loss is assessed by a first judgment, and the Strasbourg primary health insurance fund is reimbursed half of its outlays (the amounts it advanced for treatment). Everything seems settled.

But the fund comes back: it claims reimbursement of additional benefits paid to Koenig after that judgment. It relies on "reservations" allegedly granted to it in the first proceedings for future benefits. The Strasbourg district court rules in its favour. Mr Andres and his insurer challenge this: in their view, the loss was finally determined and cannot be reopened.

The Court of Cassation quashes the Strasbourg judgment. It says: the fund can only obtain these benefits if they correspond to an aggravation of Koenig's condition, or to an element of loss that already existed but only came to light after the first judgment. However, the lower court did not check this; it simply accepted the reservations as a blank cheque. The case is remitted to another court. A lesson: reservations are not a carte blanche to claim without limit.

The Reasoning of the Court — Explained

The Court of Cassation relies on the fundamental principle of full compensation for loss (Article 1240 of the Civil Code: "Any act of a person which causes damage to another obliges the person through whose fault it occurred to make reparation"). But it adds a procedural rule: this damage must be assessed once and for all as at the date of the judgment. Why? To guarantee legal certainty: a final court decision (one no longer subject to appeal or cassation) cannot be endlessly challenged.

The judges distinguish two situations where a new claim is possible: aggravation of the victim's condition (e.g., a medically confirmed relapse) or late revelation of a loss that existed in embryo but was not yet known (e.g., an infection that manifests after the judgment). However, mere reservations for future benefits, such as foreseeable cure costs, do not allow the case to be reopened. The Court specifies: "reservations recorded for the reimbursement of possible future benefits cannot allow the victim to have the loss re-assessed where its amount has been assessed by a decision that has become final."

This reasoning is a confirmation of earlier case law, not a reversal. It follows a logic of stability of court decisions. The Court insists on the authority of res judicata (the principle that a final decision cannot be contested). Thus, even the social security fund, which has a protective role, cannot circumvent this rule.

What This Means for You — in Practice

Landlord in Montdidier: if a tenant is injured in your property (e.g., a fall due to poorly maintained stairs), and the court fixes his loss at €15,000, you pay and the case is closed. Unless the tenant proves a medical aggravation (e.g., post-traumatic arthritis that manifests two years later), you cannot be ordered to pay again. You can rest easy.

Victim tenant: be careful! If you forget to claim certain losses (medical expenses, loss of earnings, cosmetic damage) at the first hearing, you will not be able to claim them later. Example: you obtained €5,000 for a sprain, but six months later you discover you need surgery costing €3,000. If the surgery was not foreseeable at the time of judgment, you can come back. Otherwise, it's too late. Get a lawyer from the start so you don't miss anything.

Insurer or property professional: this decision protects you against repetitive claims. But it also requires you to assess the loss thoroughly from the first negotiation. If you sign a settlement (amicable agreement) without including all heads of loss, you could be caught out by a future aggravation. Include a global and final settlement clause.

Four Tips to Avoid This Type of Dispute

• Compile a complete medical file from the first incident: for an injured tenant, gather all medical certificates, prescriptions, and sick leave certificates. Have a permanent partial disability (PPD) rate assessed by an expert doctor. This avoids future surprises.
• Never accept a settlement without an exhaustive list of losses: whether you are the victim or the responsible party, detail each head (medical expenses, loss of income, pain and suffering, cosmetic damage). A global and final settlement protects you from subsequent claims.
• In case of aggravation, have the link to the initial accident medically certified: without a medical certificate establishing that the new condition is a direct consequence of the accident, the judge will reject your claim. Keep hospital reports.
• Check limitation periods: for a civil liability action, you have 5 years from the day you became aware of the damage (Article 2224 of the Civil Code). But if the loss has already been judged, this period does not allow you to reopen the case. Act quickly.

Further Reading: Related Case Law and Developments

This 1976 judgment is part of a consistent line. Already in 1973, the Court of Cassation had ruled (Civ. 2e, 14 November 1973) that "the loss must be assessed as at the day the judge decides". More recently, in a judgment of 19 January 2012 (No. 10-24.927), the Court specified that the aggravation must be distinct from the sequelae initially compensated. For example, if the victim had already obtained an annuity for partial paralysis, a new claim for total paralysis due to the same lesion is inadmissible, unless a new lesion has occurred.

The trend of the courts is therefore to strictly limit the possibilities of revision. This meets a need for legal certainty, especially in property disputes where the stakes are high. For the future, we can expect judges to require solid medical evidence for any aggravation, and to reject claims based on overly vague "reservations". The message is clear: once judgment is given, it's over, unless an exception applies.

In Practice: What to Do

Practical FAQ

• Can I request a revision of my loss if I discover new medical expenses after judgment? Yes, only if these expenses are linked to an unforeseeable medical aggravation or to a loss that existed but was unknown at the time of judgment. You must prove the aggravation by medical certificate.
• What if the insurer offers me a settlement before judgment? Read the "final settlement" clause carefully. If it is too general, negotiate to include a list of the losses covered. Otherwise, you risk not being able to claim a forgotten loss.
• Can a tenant reopen an amicable agreement signed with the landlord? Yes, if he proves a defect of consent (error, fraud, duress) or a subsequent aggravation. But the amicable agreement has the force of contract: it is difficult to challenge.
• What are the time limits for acting in case of aggravation? You have 5 years from the date of discovery of the aggravation (Article 2224 of the Civil Code). But the safest is to act within one year to avoid any dispute.
• Are reservations in a judgment of any value? Yes, but limited: they do not allow re-assessment of a loss already fixed. They serve to preserve rights for unforeseeable future benefits, but the judge must verify that those benefits are indeed linked to an aggravation or a non-disclosed loss.

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