Note on Cass. com., 13 May 2026, no. 25-10.491

 

The oxymoron drawn from Rodrigue’s monologue in Corneille’s Le Cid is a perennial delight for students sitting their baccalauréat.

It also captures rather well a decision handed down on 13 May by the Commercial Chamber of the Cour de cassation, presided over by Vincent Vigneau, and destined for publication in the Bulletin.

At stake: the interpretation of contracts, and more particularly the maxim interpretatio cessat in claris, enshrined since 2016 in Article 1192 of the French Civil Code — here inapplicable ratione temporis, the contract having been concluded before 2016.

That text, which merely codifies a time-honoured rule the Court had notably restated in the famous Veuve Foucaulddecision of 1872, provides: « On ne peut interpréter les clauses claires et précises à peine de dénaturation » (clear and precise clauses may not be interpreted, on pain of distortion).

In other words, it forbids the judge from interpreting what is clear and precise.

The point seems settled, and stamped with common sense.

To interpret what is clear and precise is to betray the parties’ will and to substitute for it the judge’s own sense of equity.

So be it: what is clear and precise admits of no interpretation. Conversely (a contrario), once a clause is ambiguous, the door opens and the judge may interpret it.

This binary reasoning may seem reassuring.

Yet, put to the test, the rule is not always so easy to apply. At what point is ambiguity sufficient for the judge to interpret the contract?

Scholarship sometimes defines this ambiguity in the negative: a clause is clear when it is « susceptible d’un seul sens » (capable of a single meaning); it becomes open to interpretation when it is « susceptible de plusieurs sens » (capable of several meanings) (J. and L. Boré, La cassation en matière civile, Dalloz Action, 6th ed. 2023/2024).

But here too the question lingers. Is it enough for one party to argue, without patent bad faith, that it understands the clause in a sense different from its opponent’s, for the clause to be “capable of several meanings” and therefore open to interpretation? In other words, is ambiguity to be assessed objectively or subjectively?

The underlying question proves awkward: can one know whether a clause is clear and precise without first having interpreted it? Indeed, to determine whether a clause is open to interpretation, must the judge not first interpret it, in order to establish whether it is capable of one or of several meanings? (compare J. Monéger, « De la dénaturation d’une clause contractuelle ou de l’art du clair-obscur », Loyers et copr. 2019, no. 11, repère 10).

In the present case, the difficulty lay in how the ambiguity was characterised.

An economic interest grouping (GIE) entrusted a service provider with running its telephone-reception service. A 2014 amendment set a three-year term. A handwritten note was added in the margin, stipulating « reconduction tacite par période de 1 an » (tacit renewal for one-year periods) and coupling it with a right of termination.

The GIE terminated the contract at the end of the first year. The provider considered itself the victim of an early termination. In short, the dispute turned on a single question: was the contract for a fixed three-year term (as the provider argued), or could it be freely terminated (as the GIE contended)?

The Lyon Court of Appeal (10 October 2024) began by conceding that the wording of Article 6 of the amendment, supplemented by the handwritten note, « paraît signifier que le contrat est conclu pour une durée ferme de trois années » (appears to mean that the contract was concluded for a firm three-year term) — and that this reading « donne foi, de prime abord, à la lecture retenue » (lends credence, at first sight, to the reading) put forward by the provider.

However, taking into account an email sent more than six months after the amendment, the Lyon court ultimately (in fine) adopted the opposite position.

That email of 21 May 2015, from the provider, read as follows: « Bonjour, voici l’avenant signé et modifié. Je vous confirme que nous avions intégré un engagement de 12 mois au lieu des 36 initiaux… » (Hello, here is the signed and amended document. I confirm that we had built in a 12-month commitment instead of the original 36…).

According to the GIE, it left « aucun doute quant à la volonté des parties, nonobstant le caractère ambigu de la mention manuscrite » (no doubt as to the parties’ intention, notwithstanding the ambiguous character of the handwritten note).

The Lyon court held that this email « démontre sans la moindre ambiguïté que la commune intention des parties a été de substituer à la durée initialement convenue de 3 ans, des périodes annuelles successives… » (demonstrates, beyond the slightest ambiguity, that the parties’ common intention was to substitute successive yearly periods for the initially agreed three-year term, with a right of unilateral termination at the end of each).

It inferred that, « en dépit des termes inappropriés et trompeurs de la mention manuscrite marginale » (despite the inappropriate and misleading terms of the marginal handwritten note, supposed to embody their common intention), the parties had agreed:

— that the amendment was concluded for an overall three-year term, divided into successive yearly periods;

— that either party could terminate the contract at the end of any such yearly period, subject to three months’ notice.

And, sensing full well that it was venturing into murky waters, the Court of Appeal denied engaging in any interpretation of the contract.

It put it thus: « la cour n’interprète pas le contrat, mais détermine quelle a été la substance de l’accord des parties, constitutive du negotium, au-delà de l’instrumentum défaillant… » (the court is not interpreting the contract, but determining the substance of the parties’ agreement — the negotium — beyond the defective instrumentum, owing to a marginal handwritten note that did not faithfully reflect their common intention).

One feels a certain unease on reading the Court of Appeal’s decision.

The lower-court judges do not appear to own up to the interpretive exercise they are performing.

Why?

No doubt because there was nothing to interpret. Since Article 6 of the amendment contained no intrinsic ambiguity, and no extrinsic ambiguity could be drawn from reading the clause together with the handwritten note, the clause — clear and precise — could not be interpreted.

Plainly, ambiguity cannot arise from setting the wording of the contract against an email sent six months later. Were it otherwise, it would suffice to write an email months or years after the contract to manufacture an ambiguity between the two, allowing the judge to interpret what, at the moment the parties’ wills met, was clear and precise.

Magritte’s « Ceci n’est pas une pipe » is not far off.

Yet this is what the Lyon court seemed to hold when it asserted that « la contestation de la portée de l’engagement commandait la recherche de la commune intention des parties » (the challenge to the scope of the undertaking called for a search for the parties’ common intention). On that view, it would be enough to go back on one’s word in a later letter to summon up the obscurity propitious to judicial interpretation.

As for the elegant but contrived distinction between interpreting and determining the « substance de l’accord des parties» (substance of the parties’ agreement), it scarcely holds. For what is interpreting a contract, if not revealing the parties’ will?

Like Molière’s Monsieur Jourdain, who spoke prose without knowing it, the Court of Appeal interpreted without knowing it — or under cover.

Hence the provider’s appeal to the Cour de cassation, arguing that the handwritten marginal note to Article 6 « complétait nécessairement, sans la contredire, la stipulation d’une durée ferme de trois ans… » (necessarily supplemented, without contradicting, the stipulation of a firm three-year term; the two provisions did not overlap, the first fixing the irrevocable term, the second governing the conditions of any later renewal).

Accordingly, absent any contradiction between the handwritten note (concerning tacit renewal) and the contract (which fixed the three-year term), no ambiguity — so the appeal ran — justified opening up a power of interpretation.

On the sole basis of former Article 1134 — the contract predating 2016 — the Commercial Chamber held that « les juges du fond ne peuvent interpréter les conventions que si celles-ci sont obscures ou ambiguës » (the lower courts may interpret agreements only where these are obscure or ambiguous).

Yet, the Court of Appeal had itself found the instrument to be unambiguous. By searching for the common intention where the wording sufficed, it violated the text. Never mind the vessel: to label the search for the parties’ common intention a « détermination du negotium » is, beyond the words, an act of interpretation all the same.

The articulation of the provisions confirms the analysis. While Article 1188 invites the judge to seek the common intention « plutôt qu’en s’arrêtant au sens littéral » (rather than stopping at the literal meaning of the terms), Article 1192 bars access to it so long as the terms remain clear and precise. In other words, the search for intention begins only once ambiguity is established.

The Cour de cassation’s decision to quash thus appears justified. One cannot manufacture a doubt the better to resolve it. Otherwise every contract would become ambiguous — through the force of an email, a witness statement, a circumstance — and its binding force would hang on nothing more than the judge’s goodwill.

Even though the natural inclination of a judge — or of an arbitrator — might lead him to prefer the interpretation he finds just over the one the contract’s terms command, Article 1192 of the Civil Code remains a dyke. Where the terms are clear and precise, interpretation is excluded.

The dyke still holds — at least in appearance. For must we not accept that « lorsque la Cour de cassation censure l’interprétation d’un contrat prétendument dénué de toute ambiguïté, elle fait prévaloir sa propre interprétation » (where the Cour de cassation quashes the interpretation of a contract supposedly free of any ambiguity, it imposes its own interpretation) (G. Chantepie and M. Latina, Le nouveau droit des obligations, Dalloz, 3rd ed. 2024, no. 511)?

In sum, interpretation remains a delicate art, and the little guide-âne (rule-of-thumb crib) dear to Carbonnier does not solve everything.

To be continued!

TAKEAWAYS

  • A judge may not interpret a clear and precise clause;
  • Where a clause carries no intrinsic ambiguity and acquires no extrinsic ambiguity when read together with another clause, it must be regarded as clear and precise;
  • A judge may not rely on later exchanges to create, a posteriori, an ambiguity about what was clear a priori.