Discovering that an artwork may not be authentic does not automatically determine the legal remedy. Under French law, the buyer must first identify what was contractually promised, what uncertainty was accepted and what new evidence now challenges the description under which the work was sold.
Mistake as to an essential quality is a central remedy
Article 1132 of the French Civil Code provides that a mistake of fact or law may lead to annulment where it concerns an essential quality of the performance, unless the mistake is inexcusable. Article 1133 defines essential qualities as those expressly or tacitly agreed and in consideration of which the parties contracted.
For artworks, authorship, period, provenance or another characteristic can be essential depending on the contract. But the wording matters. If the buyer accepted an attributional risk through a qualified description, French law may treat that uncertainty as part of the bargain.
The catalogue entry, invoice, condition report, correspondence and terms of sale should therefore be reviewed before assessing the prospects of annulment.
Fraud is different from mistake
Where a party alleges deliberate deception rather than an innocent or shared mistake, Article 1137 of the French Civil Code may become relevant. Fraud (dol) includes manoeuvres, lies and intentional concealment of information known to be decisive for the other party.
It is not enough to show that an attribution was ultimately wrong. The claimant must establish the conduct relied upon and, where fraud is alleged, its intentional character.
A negative specialist opinion is evidence, not necessarily the end of the case
A buyer may obtain a negative opinion from an artist estate, committee, catalogue raisonné author or specialist. Such an opinion can have substantial market consequences, but French courts assess the evidence in context. The 4 February 2025 Paris Court of Appeal decision is instructive because a respected specialist’s negative opinion was later reassessed through a judicial expert process that clarified provenance and stylistic evidence.
This does not diminish the importance of recognised specialists. It demonstrates why the legal case should not be reduced to a single opinion when other evidence is available.
Auction-house and expert liability may follow a separate route
The buyer’s claim against the seller is distinct from a possible professional-liability claim against an auction house or expert. In its decision of 1 April 2025, the Paris Court of Appeal scrutinised the diligence surrounding an unreserved guarantee of authenticity, including the reliability of the certificate relied upon and the stated provenance.
The important point is not that every auction house must follow an identical checklist. It is that the professional’s own verification process and the strength of the description can become central issues in litigation.
Limitation periods should be analysed immediately
Authenticity doubts often arise years after acquisition. Under Article 1144 of the Civil Code, the limitation period for an annulment action based on mistake or fraud does not run until the mistake or fraud is discovered. Professional-liability claims in the auction context may be subject to the special five-year rule in Article L. 321-17.
Limitation should therefore be examined at the beginning of the matter, not after the expert work has been completed.
About the author
An article written by Alexis Fournol, Attorney at Law and Partner at Fournol & Associés.
Alexis Fournol advises and represents auction houses, galleries, dealers, experts, collectors, artists and artist estates in authenticity, attribution and art-market disputes. He also regularly works with foreign lawyers on French-law aspects of cross-border art matters.
How Fournol & Associés can assist
Fournol & Associés regularly advises and represents clients in authenticity, attribution and expert-liability matters involving artworks and collectibles. The Firm has handled, and is currently handling, several matters involving disputed authenticity, auction descriptions, expert opinions, provenance and judicial expertise.
Our practice combines art-market knowledge with French contract law, auction law, civil liability, evidence and procedure. We may intervene at the pre-contentious stage, during expert and documentary analysis, in negotiations and in proceedings before the French courts. In cross-border matters, the Firm can act as French counsel alongside the client’s existing foreign legal team.
Related reading
Art Market · Art Provenance and Ownership Claims in France · Buying Stolen Art in Good Faith
Frequently Asked Questions
Can I cancel a French art sale if the work is fake?
Potentially, but not automatically. The contractual description, legal basis and evidence concerning authenticity must all be examined.
What if the work was sold as “attributed to” the artist?
That wording introduces a defined degree of uncertainty under the Marcus Decree. Whether a later challenge supports annulment depends on what the term guaranteed and what risk the buyer accepted.
Can I sue the auction house as well as the seller?
Depending on the facts, a distinct liability claim against the auction house or assisting expert may be considered.
When should I seek advice?
As soon as a serious authenticity issue arises. Evidence, correspondence and limitation periods can all affect the available strategy.
This publication provides general information only and does not constitute legal advice. The applicable law, evidence, procedural options and limitation periods must be assessed in light of the facts of each case.
