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

Mediation

Reaching an agreement in seven weeks: principle, mediators and request for mediation before the TAO, a confidential and inexpensive amicable route.

Updated : October 28, 2026· 3 min read

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Talking before pleading

Portrait of Sandford Peacocke, William Wood (1801)
Portrait of Sandford Peacocke, William Wood (1801)

Mediation is a voluntary process in which a neutral third party helps the parties find a solution themselves. In art, where relationships last — between gallery and artist, between collector and auction house — it preserves what a trial destroys.

The TAO has offered a mediation service since 2016. It has 36 mediators, trained in conducting negotiations and in the specifics of the art market. Nearly two mediations in three end in agreement, in seven weeks on average.

This section presents the principle, the mediators and the request for mediation.

  • Mediation
  • Agreement
  • Amicable

Mediation in figures

64%Mediations ending in agreement
7 wksAverage duration
36Mediators
< 10%Cost compared with arbitration

Source: Registry of the OIMAP Arbitral Tribunal.

Three pages

Breakdown

Full agreement64%
Partial agreement12%
Failure, move to arbitration24%

Outcome of mediations in 2024.

Portrait of a Man, Nicholas Freese (c. 1795–1800)
Portrait of a Man, Nicholas Freese (c. 1795–1800)
Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Portrait Head of a Noble or Official (175–200 CE)
Portrait Head of a Noble or Official (175–200 CE)

Why choose mediation

Mediation is fast, discreet and inexpensive. It leaves the parties in control of the result: they can devise solutions a judge could not impose, such as an exchange of works, a sharing of the price, a joint exhibition or a corrective to a catalogue.

It is particularly suited to disputes where the parties wish to continue their relationship, to emotionally charged cases — inheritances, restitutions — and to those where legal uncertainty makes the outcome of a trial a gamble.

A confidential and voluntary process

Nothing said in mediation may afterwards be used before the arbitral tribunal or before a judge, unless agreed. Each party remains free to stop the process at any time. The mediator has no power of decision.

The agreement reached may be recorded in a consent award made by an arbitrator, which gives it enforceable force internationally.

Mediation and arbitration together

A mediation-arbitration clause provides first for mediation, then for arbitration if it fails. The TAO offers a variant in which the mediator may not afterwards sit as arbitrator, in order to preserve the parties' freedom of speech.

Mediation may also be decided during arbitration, with suspension of the proceedings if the parties so request. Time limits are then extended accordingly.

Solutions a judge cannot deliver

Mediation agreements reached at the TAO frequently contain creative clauses: joint exhibition of the work, long-term loan to a museum, sharing of any capital gain, publication of an erratum, founding of a prize. These solutions meet the parties' real interest more surely than a judgment.

They must, however, be drafted precisely. The mediator and the Registry help to formulate the undertakings and, if the parties wish, to record them in a consent award.

Mediation and arbitration in brief

Two complementary modes
CriterionMediationArbitration
DecisionPartiesArbitrators
Average duration7 weeks11 months
CostLowAccording to scale
Binding natureAfter agreementAward

Milestones

  1. Creation

    List of mediators.

  2. Rules

    Rules of ethics.

  3. Online mediation

    Videoconference sessions.

  4. Passing the 64% mark

    Record agreement rate.

Portrait of Georges Arnold Fitzwilliam, Charles Balthazar Julien Fevret de Saint-Mémin (c. 1790–1852)
Portrait of Georges Arnold Fitzwilliam, Charles Balthazar Julien Fevret de Saint-Mémin (c. 1790–1852)
Portrait of a Man, Italian Painter
Portrait of a Man, Italian Painter
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)

Mediation and arbitration are not mutually exclusive

Mediation or direct negotiation

Portrait Bust of a Man (27 BCE–14 CE)

Mediation

With a neutral third party
  • Structured dialogue
  • Guaranteed confidentiality
  • Enforceable agreement possible

When dialogue is blocked.

Self-Portrait, John I Smart (1802)

Direct negotiation

Between the parties
  • Free of charge
  • Flexible
  • Risk of stalemate

When the relationship is good.

Entering mediation

  1. Propose

    Invite the other party.

  2. Choose

    Appoint the mediator.

  3. Prepare

    Draft a note.

  4. Negotiate

    Joint and separate sessions.

  5. Conclude

    Sign the agreement.

What to prepare

Vocabulary of mediation

Mediator
Neutral third party who facilitates discussion.
Settle
Reach an agreement through mutual concessions.
Separate session
Confidential meeting with one party only.
Mediation agreement
Document signed by the parties.

Frequently asked questions

Is mediation compulsory?

No, unless a clause so provides.

How much does it cost?

Less than ten percent of an arbitration.

Is the agreement enforceable?

Yes, through a consent award.

Where do I apply?

Useful documents

Contacts

Small Mosque in the Kaiserbagh, Felice A. Beato (1858)
Small Mosque in the Kaiserbagh, Felice A. Beato (1858)
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.

Request mediation

Portrait of a Man, Louis Lafitte (1793)

Launch the process.

Request mediation
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