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

Case-law commentaries

Analyses by legal scholars of TAO decisions: themes, authors, method and use of commentaries in practice.

Updated : October 28, 2026· 3 min read

Scholarship informs practice

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

A decision on its own says little. A commentary places it within the whole body of case law, draws out the principles, points out the limits and suggests avenues. The TAO invites academics and practitioners to comment on its most important decisions.

The collection holds 38 commentaries, published in French, English or Spanish. They are accessible free of charge from the decision's entry and grouped by theme.

This page presents the authors, the method and the most studied themes.

  • Commentary
  • Doctrine
  • Case law

Case-law commentaries in figures

38Commentaries published
22Authors
12Countries of origin
3Languages

Source: Registry of the OIMAP Arbitral Tribunal.

Breakdown

Authenticity36%
Provenance26%
Contracts24%
Restitution14%

Themes of the commentaries.

Who comments

The commentators are law professors, lawyers, art historians, curators and former arbitrators. An editorial committee independent of the tribunal chooses the authors and ensures a diversity of viewpoints. Arbitrators who sat in the case may not comment on the decision.

Each commentary is peer-reviewed by two reviewers before publication. Authors declare any links with the parties, their counsel or the art market.

The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
Plaque (1500s–1600s)
Plaque (1500s–1600s)
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)

Method of a commentary

A commentary follows a constant structure: presentation of the facts, analysis of the question of law, discussion of the outcome, placing in perspective with other decisions and with comparative law, and finally practical significance. It avoids going back over the merits of the case, which are covered by confidentiality.

The length is ten to twenty pages. A ten-line summary opens each commentary to allow a quick read. The bibliography lists useful references.

Using the commentaries

For counsel, a commentary helps anticipate the tribunal's reaction to an argument. For an arbitrator, it provides a critical view of the case law. For a student, it serves as an example of legal reasoning applied to art.

Commentaries may be cited in submissions, like any scholarly publication. Arbitrators are not bound by them, but they read them: scholarship influences practice.

Seminars and training

Each year the TAO organises two case-law seminars bringing together arbitrators, lawyers and academics. The most important commentaries are discussed there, and the proceedings are published. Workshops for students offer practice in analysing anonymised decisions.

These exchanges feed the thinking of the committee drafting the Rules, which finds concrete suggestions for amendment there.

Some themes covered

Four themes
ThemeQuestion studiedCommentaries
AuthenticityProbative value of an appraisal14
ProvenanceGood faith of the buyer10
ContractsWarranty and price9
RestitutionTime limit and evidence5

Milestones

  1. First commentary

    Call for authors.

  2. Editorial committee

    Proofreading.

  3. Passing the 30 mark

    Thirty commentaries.

  4. 38 commentaries

    Open collection.

A scholarly opinion is not a decision

Coronation of the Virgin, Christoffel Jegher (1632–36)
Coronation of the Virgin, Christoffel Jegher (1632–36)
The Calumny of Apelles, Giorgio Ghisi (1560)
The Calumny of Apelles, Giorgio Ghisi (1560)
Seal Color Box (1662–1722)
Seal Color Box (1662–1722)

Commentary or summary note

Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)

Commentary

In-depth analysis
  • Ten to twenty pages
  • Placing in perspective
  • Named author

For major decisions.

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

Summary note

Short sheet
  • One to two pages
  • Overview
  • Written by the committee

For routine decisions.

Contributing

  1. Propose

    A topic to the committee.

  2. Write

    According to the guidelines.

  3. Submit

    For proofreading.

  4. Correct

    After review.

  5. Publish

    Online.

Author guidelines

An author

Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)
« To comment on an arbitral decision is to reconstruct a line of reasoning without seeing the file: a demanding and very instructive exercise. »
Pr. Mireille Aubry, professor of law

Vocabulary of scholarship

Doctrine
All legal publications.
Comparative law
Study of several national laws.
Peer review
Examination by specialists.
Scope
Extent of the effect of a decision.

Frequently asked questions

May I propose a commentary?

Yes, to the editorial committee.

Are the commentaries paid?

No, except in special cases.

Can they be translated?

With the author's agreement.

Where can I see the decisions?

Useful documents

Contacts

Roman Ruins, Villa Pamfili, Hubert Robert (1774)
Roman Ruins, Villa Pamfili, Hubert Robert (1774)
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.

See the tribunal's studies

The Triumph of Mordecai, Lucas van Leyden (1515)

Reports and analyses.

Studies
Image credits (16)
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