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

Arbitral case law

Decision database, search and commentaries: the TAO's anonymised case law, to anticipate the outcome of your own dispute.

Updated : October 28, 2026· 3 min read

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Learning from past decisions

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)

Arbitration being confidential, awards are not public. But with the parties' agreement, the TAO publishes anonymised versions of its decisions. They make up a valuable body of arbitral case law: they shed light on the interpretation of rules, customs and principles.

The database now holds 412 decisions, accessible online, classified by theme and indexed. Each comes with a summary and, for the most important, a commentary.

This section presents the decision database, the search engine and the commentaries.

  • Case law
  • Decision
  • Anonymisation

Arbitral case law in figures

412Decisions published
38Doctrinal commentaries
27%Share of awards published
3Languages

Source: Registry of the OIMAP Arbitral Tribunal.

Three pages

Breakdown

Authenticity34%
Contracts30%
Provenance22%
Restitution14%

Decisions published by theme.

Sweet Melancholy, Joseph-Marie Vien (1756)
Sweet Melancholy, Joseph-Marie Vien (1756)
Coronation of the Virgin, Christoffel Jegher (1632–36)
Coronation of the Virgin, Christoffel Jegher (1632–36)
The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)
The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)

Why publish

Anonymised publication meets a need for predictability. Market players need to know how arbitrators interpret warranties, assess appraisals and deal with provenance questions. It also makes it possible to train practitioners and feed university research.

Confidentiality remains protected: the names of the parties, arbitrators, places and works are removed, along with any element allowing identification. Only awards whose publication the parties have consented to are published.

How decisions are selected

An editorial committee selects the awards of interest in principle: a new legal question, application of a rule, interpretation of a custom, position on an appraisal. It then asks the parties to consent to publication.

Decisions are summarised in a few lines, with keywords and references to articles of the Rules. The most important are translated into the three languages.

Value of arbitral case law

No award binds subsequent arbitrators: there is no binding precedent in arbitration. But consistency is sought, and arbitrators readily refer to earlier decisions. The parties may invoke published decisions in support of their argument.

This persuasive value makes the database a strategic tool for counsel, who assess their chances and the risks of a dispute more accurately.

Annual compendium

Each year the TAO publishes a compendium of landmark decisions, with an index and a thematic table. It is available online and in print, in three languages.

The compendium also brings together scholarly studies and publication statistics. It serves as support for training seminars organised with bar associations and universities.

Content of the database

Four themes
ThemeDecisionsExamples of questions
Authenticity140Value of an appraisal, warranty
Contracts124Price, latent defects, warranty
Provenance90Title, good faith
Restitution58Cultural property, time limit

Milestones

  1. First decision

    Published.

  2. 100 decisions

    Threshold passed.

  3. Commentaries

    Scholars invited.

  4. 412 decisions

    Search engine.

Carnet (1863–1865)
Carnet (1863–1865)
Seal of Doge Michele Steno (reverse) (1400–1409)
Seal of Doge Michele Steno (reverse) (1400–1409)
Fish or Seal Club (X’ús’) (late 1800s–early 1900s)
Fish or Seal Club (X’ús’) (late 1800s–early 1900s)

No binding precedent

Arbitral and State case law

Document Box (Ryōshibako) with Chrysanthemum and Plum (lid) (late 1800s-early 1900s)

Arbitral

TAO decisions
  • Specialised
  • Anonymised
  • Consensual

Reflects customs.

Teapot with Landscape and Imperial Poem, Chen Hanwen (1762–95)

State

Court judgments
  • Public
  • Diverse
  • Varies from country to country

Reflects national laws.

Using case law

  1. Define

    The legal question.

  2. Search

    Database.

  3. Read

    Summaries.

  4. Analyse

    Comparable facts.

  5. Cite

    In submissions.

Good practice

A scholar

Carved Lacquer Scroll Box (1736–95)
« At last the database gives us material for analysing how arbitrators reason. It is invaluable for teaching. »
Pr. Mireille Aubry, professor of law

Vocabulary of case law

Case law
All the decisions made.
Anonymisation
Removal of identifying elements.
Summary
Synopsis of a decision.
Keywords
Terms useful for searching.

Frequently asked questions

Is access free?

Yes.

May I cite the decisions?

Yes, with the reference.

Are all awards published?

No, only with agreement.

Where can I search?

See Search.

Useful documents

Contacts

Nowshera, Kashmir (number 1000), Samuel Bourne (1864)
Nowshera, Kashmir (number 1000), Samuel Bourne (1864)
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.

Consult the database

Seal Color Box (1662–1722)

412 decisions.

Decision database
Image credits (22)
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