Observe · Regulate · Protect — since 2007. 19th OIMAP General Assembly: Singapore, 10–12 June 2026. Programme
Regulation

Case law

640 summarised court and arbitration decisions: authenticity, provenance, ownership, good faith, restitution and operators' liability.

Updated : October 28, 2026· 3 min read

How judges apply the texts

The Triumph of Mordecai, Lucas van Leyden (1515)
The Triumph of Mordecai, Lucas van Leyden (1515)

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
  • Decisions
  • Arbitral Tribunal

Case law in figures

640Decisions
342Decisions of the Arbitral Tribunal
298Decisions of national courts
7Main themes

Source: OIMAP Legal Affairs Department.

Breakdown

Authenticity24%
Provenance and restitution27%
Property15%
Good faith and due diligence19%
Digital market7%
Other8%

Breakdown of decisions by theme.

Qur'an Manuscript Folio (recto; verso); Left side of Bifolio (800s)
Qur'an Manuscript Folio (recto; verso); Left side of Bifolio (800s)
The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)
The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)
Missale: Fol. 185v: Crucifixion with borders  (full page), Bartolommeo Caporali (1469)
Missale: Fol. 185v: Crucifixion with borders (full page), Bartolommeo Caporali (1469)

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

Five lessons
ThemeQuestion decidedSolution
Good faithCan a dealer who did not consult a stolen-property database rely on good faith?No
AuthenticityDoes an "attributed to" wording exclude the guarantee?Not if it is poorly explained
ProvenanceIs a gap from 1933 to 1945 excusable?No, without research
Digital marketDoes a token give ownership of the work?No, unless the contract says so explicitly
RestitutionIs compensation due to the diligent possessor?Yes

Landmarks

  1. First decisions

    Arbitral Tribunal.

  2. Creation of the database

    One hundred decisions.

  3. Indexing by theme

    Seven themes.

  4. 640 decisions

    Quarterly update.

A decision is not a rule

National decision or arbitral decision

Seal Color Box (1662–1722)

National

Judge of a State
  • Local enforceability
  • Public procedure
  • General training

According to national law.

Qur'an Manuscript Folio (800s)

Arbitral

OIMAP Arbitral Tribunal
  • Specialists
  • Confidential
  • Recognised by Member States

For art disputes.

The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
St. Catherine of Siena and the Beggar, Giovanni di Paolo (1460s)
St. Catherine of Siena and the Beggar, Giovanni di Paolo (1460s)
Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810)
Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810)

Searching for a decision

  1. Frame

    Formulate the legal question.

  2. Filter

    Choose the theme and period.

  3. Read

    Examine the summary.

  4. Check

    Consult the full decision.

  5. Cite

    Reference precisely.

Points to check

A magistrate

Leaf from a Missal: The Crucifixion (recto) and Text (verso) (c. 1330–40)
« A clear decision on a precise point sheds light on hundreds of similar situations. That is the great value of publication. »
Judge Marta Lindqvist, magistrate

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?

Useful documents

Contacts

Egypt and Nubia, Volume I: The Great Temple of Aboo-Simble, Nubia, Louis Haghe (1846)
Egypt and Nubia, Volume I: The Great Temple of Aboo-Simble, Nubia, Louis Haghe (1846)
Legal Affairs DepartmentParis — Headquarters+33 1 00 00 02 00juridique@oimap.exampleMonday to Friday, 9 am – 5 pm

See the regulatory alerts

Miniature from a Manuscript of the Apocalypse: The War in Heaven (c. 1295)

Follow developments in the law.

Regulatory alerts
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