A text that evolves with practice

A set of arbitration rules lives with the needs of its users. Since 2011, the TAO has revised it four times to incorporate mediation, the expedited procedure, remote hearings and online filing. Each revision follows a consultation procedure.
This page presents the history of amendments, their rationale and their effects on pending proceedings. A concordance table links each article of one version to that of the next.
Before drafting any clause, check that you have the latest version.
Amendments to the Rules in figures
Source: Registry of the OIMAP Arbitral Tribunal.
Successive revisions
The 2016 version added the mediation annex and clarified the rules on independence. The 2019 version introduced the expedited procedure and urgent measures. The 2022 revision enshrined remote hearings and electronic exchanges. The 2024 version made online filing general, revised the scale of fees and strengthened transparency in appointments.
Each revision was preceded by a consultation of users: surveys, meetings with bar associations and market operators, written comments.



Revision procedure
A proposal for amendment may come from the council, the Registry, the quality committee or users. A drafting committee prepares a draft, published for consultation for sixty days. The comments are analysed in a public report, then the council adopts the text by a qualified majority.
The new version comes into force on a date announced at least three months in advance. A user guide summarises the changes.
Transitional rules
Requests filed before the entry into force of a new version remain governed by the old one, unless the parties agree otherwise. Arbitration clauses referring to the TAO Rules are understood as referring to the version applicable on the date of the request.
This rule protects predictability: the parties know which rules will apply, while benefiting from improvements for future cases.
Projects in preparation
The drafting committee is currently studying three avenues: a consolidation procedure for multiple disputes, a specific regime for private online sales and transparency rules on third-party funding of disputes. The projects will be submitted for consultation when they are ready.
Users may make their needs known to the Registry at any time. Suggestions are examined each year by the quality committee.
History of versions
| Version | Main new features | Entry into force |
|---|---|---|
| 2011 | Creation | 1 January 2011 |
| 2016 | Mediation, independence | 1 March 2016 |
| 2019 | Expedited procedure, urgency | 1 September 2019 |
| 2022 | Remote hearings | 1 June 2022 |
| 2024 | Online filing, new scale of fees | 1 January 2024 |
Milestones
- Version 1
38 articles.
- Version 2
50 articles.
- Version 3
56 articles.
- Version 4
60 articles.
- Version 5
62 articles.
Which version applies?



Old clause or new version

Old clause
Drafted before 2019- Remains valid
- Refers to the current version
- May overlook the expedited procedure
To be revised if possible.

Recent clause
Drafted after 2022- Suited to remote hearings
- Includes mediation
- Aligned with the scale of fees
Recommended practice.
Following the amendments
- Subscribe
Registry alert.
- Read
Explanatory note.
- Compare
Concordance table.
- Update
Clauses and models.
- Train
Inform the teams.
Habits to adopt
A scholar

« These Rules evolve at the pace of the market. That is rare: most arbitration texts change only once a decade. »
Vocabulary of revisions
- Concordance
- Table linking the articles of two versions.
- Public consultation
- Comment phase before adoption.
- Qualified majority
- Reinforced voting threshold.
- Transitional provision
- Rule governing the passage from one version to another.
Frequently asked questions
May I comment on a draft?
Yes, during the consultation.
Do the Rules change often?
Every three to four years.
Do my clauses remain valid?
Yes.
Where can I read the text?
See Full text.
Useful documents
Contacts

Consult the tribunal reports
Image credits (16)
- Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815) — Cleveland Museum of Art, CC0 1.0
- The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760) — Cleveland Museum of Art, CC0 1.0
- The Calumny of Apelles, Giorgio Ghisi (1560) — Cleveland Museum of Art, CC0 1.0
- Plaque (1500s–1600s) — 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
- Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439) — Cleveland 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
- Seal Color Box (1662–1722) — 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
- The Dance at the Court of Herod, Israhel van Meckenem (c. 1500) — Cleveland Museum of Art, CC0 1.0
- Coronation of the Virgin, Christoffel Jegher (1632–36) — Cleveland Museum of Art, CC0 1.0
- Pair of Drawings: Sketch of the Labyrinth of the Villa Pisani and Piazza San Marco with Doges' Palace, Francesco Guardi (1773–1778(?)) — Cleveland Museum of Art, CC0 1.0
- Mercury (Budha), from a Mandi Astrology Series, Sanju (c. 1810) — Cleveland Museum of Art, CC0 1.0
- 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) — Cleveland Museum of Art, CC0 1.0
- Sweet Melancholy, Joseph-Marie Vien (1756) — Cleveland Museum of Art, CC0 1.0
- The Triumph of Mordecai, Lucas van Leyden (1515) — Cleveland Museum of Art, CC0 1.0
Cleveland Museum of Art · CC0 1.0
Tribunal rulesThe TAO arbitration rules: full text, model clauses and history of amendments, in French, English and Spanish.›
Arbitration Rules: full textThe TAO Rules in force: outline of the 62 articles, key provisions, annexes and a user guide to reading them effectively.›
Tribunal reportsAnnual report, thematic studies and archives: the public memory of the TAO's activity.›