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

Decision database

412 anonymised decisions: content, structure of an entry, themes, languages and conditions of access.

Updated : October 28, 2026· 3 min read

A library of awards

The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)

The decision database brings together the anonymised awards published by the TAO since 2013. Each entry includes a summary, keywords, the applicable articles of the Rules and, where the parties have authorised it, the full text.

It is free and accessible without an account. Decisions can be downloaded as PDFs and reused, provided the source is credited.

This page explains the structure of the entries, the coverage of the database and the access rules.

  • Database
  • Decision
  • Summary

Decision database in figures

412Decisions
2013First publication
58%Full texts available
3Languages of the summaries

Source: Registry of the OIMAP Arbitral Tribunal.

Breakdown

Full text58%
Extracts31%
Summary only11%

Level of publication of decisions.

Structure of an entry

Each entry carries a reference number (for example TAO-2023-A-014), the date, the chamber, the language, the themes, the articles of the Rules and a ten-line summary. The facts are described in neutral form; the questions of law decided are distinguished from the outcome.

A box indicates whether the award was the subject of an action for annulment and its outcome. Decisions of rectification or interpretation are linked to the main award.

Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Seal Color Box (1662–1722)
Seal Color Box (1662–1722)
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)

Themes and classification

Decisions are classified in a tree of four main branches (authenticity, provenance, restitution, contracts), themselves divided into thirty sub-themes: authenticity warranty, adversarial appraisal, latent defects, title, good faith of the buyer, limitation, restitution of cultural property, and so on.

A single decision may appear under several themes. A chronological index and an index by articles of the Rules make consultation easier.

Access and reuse

Consultation is free and open. Decisions are published under an open licence, with an obligation to cite the source. Attempting to re-identify the parties is prohibited: users undertake to respect anonymity.

Researchers may request bulk access to the data (JSON format) for analysis work. An agreement sets out the conditions of use.

Editorial quality

Each published decision is proofread by the editorial committee, which checks the anonymisation, the consistency of the summary and the list of keywords. Errors reported by users are corrected within fifteen days.

Decisions that have been set aside in full are kept but clearly flagged, to prevent them being invoked as valid examples.

Content of an entry

Four fields
FieldExampleUsefulness
ReferenceTAO-2023-A-014Cite the decision
ChamberAuthenticityClassify
Articles6, 36, 38Link with the Rules
SummaryTen linesUnderstand quickly

Milestones

  1. Going online

    Forty decisions.

  2. Trilingual summaries

    Translations.

  3. Full text

    Access option.

  4. 412 decisions

    Search engine.

Respect anonymity

Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)
Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)
Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)
Sketches in Belgium and Germany, Volume I: Hall of Justice of the Magistrates du Franc, Bruges, Louis Haghe (1840)
The Triumph of Mordecai, Lucas van Leyden (1515)
The Triumph of Mordecai, Lucas van Leyden (1515)

Summary or full text

The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)

Summary

Ten lines
  • Quick reading
  • Overview of the outcome
  • Not the nuances

To get one's bearings.

The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)

Full text

Complete award
  • Detailed reasoning
  • Quotations possible
  • Longer reading

To argue.

Using the database

  1. Search

    Theme or word.

  2. Read

    Summary.

  3. Open

    Text.

  4. Export

    PDF.

  5. Cite

    Reference.

Good practices

A lawyer

Coronation of the Virgin, Christoffel Jegher (1632–36)
« I always start my authenticity cases with a search in the database. It stops me defending a thesis that the arbitrators have already rejected. »
Me Julien Karam, lawyer

Vocabulary of the database

Reference
Identification number of a decision.
Partial award
Award on part of the dispute.
Annulment
Setting aside of an award by a judge.
Summary
Synopsis of a decision.

Frequently asked questions

Are names visible?

No.

May I download everything?

For researchers, under agreement.

Are there recent decisions?

Yes, within 6 months.

Where can I search?

See Search.

Useful documents

Contacts

Sketch of the Labyrinth of the Villa Pisani, Francesco Guardi (1773–1778(?))
Sketch of the Labyrinth of the Villa Pisani, Francesco Guardi (1773–1778(?))
Registry of the Arbitral Tribunal (TAO)Paris — Head Office+33 1 00 00 04 00greffe.tao@oimap.exampleMonday to Friday, 9 a.m. – 5 p.m.

Search for a decision

Chemin de fer de Toulouse à Bayonne. Pont de l'Aran (en trois arches de 17m d'ouverture chacune). Situation des travaux au 21 juillet 1861, Édouard Baldus (1861)

By theme or keyword.

Search
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