How judges apply the texts

A text is worth only as much as the way it is applied. The case law database lists 640 decisions of national courts and of the OIMAP Arbitral Tribunal, summarised and indexed so that they can be found easily.
It covers seven major themes: authenticity, provenance, ownership, good faith, restitution, operators' liability and the digital market.
Each decision is presented with a summary, the points of law decided, the solution adopted and the texts applied.
Case law in figures
Source: OIMAP Legal Affairs Department.
The main trends
Three trends emerge. First, judges assess good faith more and more strictly: a professional buyer who has not consulted stolen-property databases is rarely protected. Second, they require a faithful description: a vague reservation is not enough to rule out the authenticity guarantee.
Finally, they pay attention to evidence of provenance: a patchy history weighs against the seller when the gaps coincide with periods of turmoil. These trends inform the recommendations to operators.



Using case law
Case law does not create a binding rule in most States, but it sheds light on how a judge might read a text. It allows an operator to anticipate a risk and a lawyer to build their argument.
Decisions of the OIMAP Arbitral Tribunal have particular value: they are made by specialists and recognised by Member States. They are published, with the parties' consent, in anonymised form.
How case law is built up
Decisions are collected from national courts by the focal points, and from the Arbitral Tribunal by its registry. Each decision is read by a lawyer at the Department, who writes the summary, identifies the points of law and checks anonymisation.
A scientific committee made up of magistrates and academics selects the most instructive decisions to highlight them in the quarterly newsletter. This selection guides operators to the judgments that matter.
Some emblematic decisions
| Theme | Question decided | Solution |
|---|---|---|
| Good faith | Can a dealer who did not consult a stolen-property database rely on good faith? | No |
| Authenticity | Does an "attributed to" wording exclude the guarantee? | Not if it is poorly explained |
| Provenance | Is a gap from 1933 to 1945 excusable? | No, without research |
| Digital market | Does a token give ownership of the work? | No, unless the contract says so explicitly |
| Restitution | Is compensation due to the diligent possessor? | Yes |
Landmarks
- First decisions
Arbitral Tribunal.
- Creation of the database
One hundred decisions.
- Indexing by theme
Seven themes.
- 640 decisions
Quarterly update.
A decision is not a rule
National decision or arbitral decision

National
Judge of a State- Local enforceability
- Public procedure
- General training
According to national law.

Arbitral
OIMAP Arbitral Tribunal- Specialists
- Confidential
- Recognised by Member States
For art disputes.



Searching for a decision
- Frame
Formulate the legal question.
- Filter
Choose the theme and period.
- Read
Examine the summary.
- Check
Consult the full decision.
- Cite
Reference precisely.
Points to check
A magistrate

« A clear decision on a precise point sheds light on hundreds of similar situations. That is the great value of publication. »
Vocabulary of case law
- Case law
- All court decisions taken together.
- Point of law
- Legal question decided.
- Award
- Decision of an arbitral tribunal.
- Anonymisation
- Removal of personal data.
Frequently asked questions
Are the full decisions accessible?
Summaries are public; full decisions, depending on the court.
Are the parties identified?
No, decisions are anonymised.
Can I subscribe to new decisions?
Yes, through the regulatory alerts.
Where can I see the Arbitral Tribunal?
See Arbitration.
Useful documents
Contacts

See the regulatory alerts
Image credits (16)
- Hours of Queen Isabella the Catholic, Queen of Spain, Master of the First Prayerbook of Maximillian (c. 1500) — Cleveland Museum of Art, CC0 1.0
- The Triumph of Mordecai, Lucas van Leyden (1515) — Cleveland Museum of Art, CC0 1.0
- Qur'an Manuscript Folio (recto; verso); Left side of Bifolio (800s) — Cleveland Museum of Art, CC0 1.0
- The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530) — Cleveland Museum of Art, CC0 1.0
- Missale: Fol. 185v: Crucifixion with borders (full page), Bartolommeo Caporali (1469) — Cleveland Museum of Art, CC0 1.0
- Seal Color Box (1662–1722) — Cleveland Museum of Art, CC0 1.0
- Qur'an Manuscript Folio (800s) — Cleveland Museum of Art, CC0 1.0
- The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855) — Cleveland Museum of Art, CC0 1.0
- St. Catherine of Siena and the Beggar, Giovanni di Paolo (1460s) — Cleveland Museum of Art, CC0 1.0
- Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810) — Cleveland Museum of Art, CC0 1.0
- Leaf from a Missal: The Crucifixion (recto) and Text (verso) (c. 1330–40) — Cleveland Museum of Art, CC0 1.0
- Egypt and Nubia, Volume I: The Great Temple of Aboo-Simble, Nubia, Louis Haghe (1846) — Cleveland Museum of Art, CC0 1.0
- The Calumny of Apelles, Giorgio Ghisi (1560) — Cleveland Museum of Art, CC0 1.0
- Illuminated Opening Page Titled Laila and Majnun from a Khamsa (Quintet) of Nizami of Ganja, Ja'far Baisunghuri (835 AH/1431–32 CE) — The Metropolitan Museum of Art, CC0 1.0
- Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840) — Cleveland Museum of Art, CC0 1.0
- Miniature from a Manuscript of the Apocalypse: The War in Heaven (c. 1295) — Cleveland Museum of Art, CC0 1.0
Cleveland Museum of Art · CC0 1.0
Reference textsLegal library, case law and regulatory alerts: everything to find and follow the texts applicable to the art market.›
Legal library1,850 classified and searchable texts: conventions, directives, national laws, models and guides, with search by State, theme and date.›
ArbitrationThe OIMAP Arbitral Tribunal (TAO) settles art and heritage disputes: authenticity, provenance, restitution and contracts, through arbitration or mediation.›