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

Arbitration

The OIMAP Arbitral Tribunal (TAO) settles art and heritage disputes: authenticity, provenance, restitution and contracts, through arbitration or mediation.

Updated : October 28, 2026· 4 min read

Pages in this section

The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)Arbitral Tribunal (TAO)An arbitral jurisdiction specialised in the art market and heritage: mission, organisation, principles and figures of the TAO.› The Judgment of Solomon and Esther before Ahasuerus (pair), Dirk Vellert (c. 1530)Referring a case to the tribunalAdmissibility conditions, fees and online request: everything you need to know to bring a case before the OIMAP Arbitral Tribunal.› Portrait of John VIII Palaoelogus, Emperor of Constantinople, 1424-1428 (reverse), Pisanello (c. 1438–1439)Arbitration procedureFrom request to award: the stages, time limits and hearings of an arbitration before the TAO, with a typical eleven-month timetable.› Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)Tribunal rulesThe TAO arbitration rules: full text, model clauses and history of amendments, in French, English and Spanish.› Portrait of Georges Arnold Fitzwilliam, Charles Balthazar Julien Fevret de Saint-Mémin (c. 1790–1852)List of arbitrators142 arbitrators of 48 nationalities: directory, specialisms and appointment procedure of the OIMAP Arbitral Tribunal.› Annunciation to the Shepherds: Leaf from a Book of Hours (1 of 6 Excised Leaves), Henri d'Orquevaulx (c. 1420–30)Authenticity disputesWhen the attribution of a work is contested: principles, appraisal and TAO decisions on authenticity.› Plaque (1500s–1600s)Provenance disputesWho is the rightful owner? Principles, evidence and TAO decisions when the origin of a work is contested.› Hittite Vessel with Four Scenes Molded and Carved in Relief (1400–1200 BCE)Restitution disputesStates, communities, museums and collectors: how the TAO handles claims for the return of cultural property.› The Calumny of Apelles, Giorgio Ghisi (1560)Contract disputesSales, deposits, warranties: a third of the TAO's cases concern the performance of art-market contracts.› Letter Box, Ogata Kōrin (1700s)Arbitral case lawDecision database, search and commentaries: the TAO's anonymised case law, to anticipate the outcome of your own dispute.› Coronation of the Virgin, Christoffel Jegher (1632–36)MediationReaching an agreement in seven weeks: principle, mediators and request for mediation before the TAO, a confidential and inexpensive amicable route.› The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)Enforcement of awardsAn award is worth something only if it is enforced: New York Convention, recognition and follow-up of TAO awards throughout the world.› The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)OIMAP standard clauseA ready-to-use arbitration clause for your art contracts: official text, translations into three languages and advice on use.› The Triumph of Mordecai, Lucas van Leyden (1515)TAO statisticsThe figures of art arbitration: cases per year, by region and by type of dispute, since the tribunal's creation in 2011.› Sweet Melancholy, Joseph-Marie Vien (1756)Tribunal reportsAnnual report, thematic studies and archives: the public memory of the TAO's activity.›

Settling an art dispute without going through ten courts

Seal Color Box (1662–1722)
Seal Color Box (1662–1722)

A painting sold in New York, appraised in Paris, held in Dubai: when a dispute arises, which court should be seized, which law applies, which language is spoken? The OIMAP Arbitral Tribunal (TAO) answers with a single, specialised and confidential procedure.

Created in 2011, the TAO has handled 1,480 cases. It brings together a list of 142 arbitrators of 48 nationalities, all specialists in the art market, heritage law or international trade law. Its awards are enforceable in more than 170 States thanks to the New York Convention.

This section presents referral to the tribunal, the procedure, the rules, mediation, the list of arbitrators, case law, enforcement of awards and statistics.

  • Arbitration
  • TAO
  • Dispute

Arbitration in figures

1,480Cases since 2011
212Requests in 2024
11 monthsAverage duration of a case
81%Awards voluntarily complied with

Source: Registry of the OIMAP Arbitral Tribunal.

Arbitration sections

Breakdown

Contract disputes33%
Authenticity31%
Provenance22%
Restitution14%

Types of disputes handled in 2024.

Carved Lacquer Scroll Box (1736–95)
Carved Lacquer Scroll Box (1736–95)
Seal with Two Qilin Playing (1849)
Seal with Two Qilin Playing (1849)
Carnet (1863–1865)
Carnet (1863–1865)

Why arbitration

Arbitration offers the art world three advantages. First, confidentiality: no public hearing, no publication without the parties' agreement, which protects the reputation of collectors and houses. Second, specialisation: the arbitrators know the market, its customs and appraisal techniques. Finally, portability: an arbitral award is enforced abroad far more easily than a judgment.

The TAO also offers mediation, which is faster and less costly and leads to an agreement in nearly two cases out of three. The parties may use it before or during the arbitration.

A tribunal with four chambers

The TAO is organised into four chambers: authenticity, provenance, restitution and contracts. Each chamber brings together arbitrators experienced in the type of dispute concerned and relies on independent experts, including those accredited by OIMAP certification.

The Registry, based in Paris, receives requests, checks admissibility, constitutes the tribunal and ensures compliance with time limits. Hearings are held in Paris, Geneva, Singapore or Dubai, or by videoconference.

Who may use the TAO

Any natural or legal person may bring a case before the tribunal: collector, gallery, auction house, museum, State, heir, expert. It is enough for the parties to have agreed to arbitration, in their contract or after the dispute arose.

States may also use it for restitution disputes, with their own counsel. In such cases the tribunal takes account of the applicable immunities and international conventions.

Section services

Four common needs
NeedPageIndicative time limit
File a requestReferring a case to the tribunalAdmissibility within 5 days
Understand how it worksArbitration procedure11 months on average
Reach an agreementMediation7 weeks
Draft a clauseOIMAP standard clauseImmediate

Milestones

  1. Creation of the TAO

    First rules.

  2. Mediation

    Creation of the list of mediators.

  3. Expedited procedure

    Six months for small disputes.

  4. Online request

    Fully digital filing.

A well-drafted clause prevents a dispute

Arbitration or State court

TAO arbitration

Private procedure
  • Confidentiality
  • Specialised arbitrators
  • International enforcement

Suited to cross-border disputes.

State court

Public procedure
  • Public hearings
  • Multiple avenues of appeal
  • Enforcement more difficult abroad

Suited to purely domestic disputes.

Resolving a dispute

  1. Try

    Mediation or negotiation.

  2. Refer

    File the request.

  3. Constitute

    Appoint the arbitrators.

  4. Plead

    Briefs and hearing.

  5. Enforce

    Award and recognition.

Before bringing a case to the tribunal

A business lawyer

« In two years, my clients have saved time and gained peace of mind: the arbitrators immediately grasp what is at stake in an appraisal or a provenance. »
Me Julien Karam, art law lawyer

Arbitration vocabulary

Arbitration
Private way of settling a dispute through arbitrators.
Award
Decision handed down by the arbitral tribunal.
Exequatur
A judge's decision authorising enforcement.
Arbitration clause
Clause providing for arbitration in advance.

Frequently asked questions

Is the TAO a State court?

No, it is a private arbitral jurisdiction.

Which languages?

French, English and Spanish.

How long does it take?

Eleven months on average.

Where can I find the procedure?

Useful documents

Contacts

The Grotto of Posillipo, Hubert Robert (c. 1769)
The Grotto of Posillipo, Hubert Robert (c. 1769)
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.

Referring a case to the tribunal

File a request online.

Referring a case to the tribunal
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