The admission of a non-judicial expert opinion supported by accompanying documents not provided by the expert himself

The admission of a non-judicial expert opinion supported by accompanying documents not provided by the expert himself

Published on : 06/05/2026 06 May May 05 2026

An insurer, having been subrogated to the rights of its insured after paying compensation, filed a liability suit against a supplier and the supplier’s insurer following the delivery of non-compliant food ingredients.

The products delivered, which were marketed as containing beef, posed a health risk due to the presence of horse meat. In accordance with the precautionary principle, all affected batches were recalled from the market and subsequently destroyed by health authorities.

To assess the damages incurred, a non-judicial expert report was prepared at the insurer’s request. This report estimated the losses at more than 7 million euros, based in particular on attached accounting documents, invoices, purchase orders, and credit notes.

The supplier’s insurer contested the probative value of this report, arguing that a non-adversarial appraisal could not, on its own, serve as the basis for the judge’s decision.

The Court of Appeal granted the claim for compensation. It held that the expert report, although prepared at the request of only one party, had sufficient probative value since it was corroborated by objective evidence. Indeed, the attached documents (particularly accounting and commercial records) were not the work of the expert but rather pre-existing evidence that allowed for verification of his conclusions. The Court therefore concluded that it could rely on this report to assess the amount of damages.

The Court of Cassation dismissed the appeal and upheld the Court of Appeal’s decision. It stated that a judge may base his or her assessment on a non-judicial expert report prepared at the request of a party, provided that its content is corroborated by evidence that is not the work of the expert, even if such evidence is attached to the report.

In this case, the trial judges had correctly found that the attached documents originated from the victim’s accounting records and business operations, and not from the expert himself. These elements therefore constituted independent evidence confirming the expert’s conclusions.

1 avril 2026, Cour de Cassation, Pourvoi n°24-17.785

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