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

Stages of arbitration

Seven stages from request to award: content of each act, responsibilities and points to watch.

Updated : October 28, 2026· 3 min read

Seven stages, seven 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)

Each stage of an arbitration produces an act and calls for a decision: file, answer, appoint, plan, plead, deliberate, render. Knowing them in advance makes it possible to prepare each moment and avoid timetable errors.

The Registry accompanies the parties at every stage and reports each advance on the Desk. The arbitrators follow the time limits set at the start of the proceedings.

This page details the seven stages, with their purpose, usual duration and the points requiring vigilance.

  • Stages
  • Award
  • Timetable

Stages of arbitration in figures

7Stages
30 dRespondent's answer
30 dConstitution of the tribunal
60 dTime limit for the award

Source: Registry of the OIMAP Arbitral Tribunal.

Breakdown

Request and answer20%
Constitution15%
Briefs35%
Hearing10%
Award20%

Weight of each stage in the overall duration.

1. Request and 2. answer

The request opens the case; the respondent's answer, within thirty days, states its defences and any counterclaims. These two acts fix the framework of the dispute: later new claims require the tribunal's authorisation.

The Registry ensures that each party receives the other's act within two days. It also informs of the possibility of mediation, without suspending the procedure.

The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
The Antechamber of the Palace of Justice, Paris, Charles Meryon (1855)
Teapot with Landscape and Imperial Poem, Chen Hanwen (1762–95)
Teapot with Landscape and Imperial Poem, Chen Hanwen (1762–95)
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)

3. Constitution and 4. first meeting

The parties appoint the arbitrators within thirty days. Failing that, the tribunal's council appoints them. The arbitrators declare their links, and the parties may object within fifteen days. Once the tribunal is constituted, it convenes a first meeting, generally by videoconference.

This meeting sets the timetable, the language, the seat, the applicable law, the rules of evidence and the hearing date. A procedural order records these decisions and is binding.

5. Briefs, 6. hearing, 7. award

The claimant files its brief, the respondent answers, then each may file a reply. Documents and written witness statements are attached. The hearing allows pleading and questioning. After the close of the debates, the tribunal deliberates and makes its award within sixty days.

The award is reasoned, signed and notified to the parties by the Registry. It has the force of res judicata from the moment it is made. Correction of a clerical error may be requested within thirty days.

After the award

The award is final. It may be challenged only by an action for annulment before the judge of the seat of arbitration, on limited grounds: lack of jurisdiction, breach of public policy, infringement of the rights of the defence. This action does not suspend enforcement unless otherwise decided.

Most awards are complied with voluntarily. In other cases, exequatur makes it possible to have them enforced, notably thanks to the New York Convention.

Summary of stages

The seven stages
StageActAuthor
1RequêteApplicant
2AnswerRespondent
3ConstitutionParties and counsel
4First meetingTribunal
5BriefsParties
6HearingTribunal and parties
7AwardTribunal

Milestones

  1. Requête

    Filing.

  2. Answer

    Respondent.

  3. Tribunal

    Constitution.

  4. First meeting

    Timetable.

  5. Hearing

    Debates.

  6. Award

    Decision.

Once the timetable is fixed

The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
The Victory Banquet: from Battle Scenes of the Quelling of Rebellions in the Western Regions, with Imperial Poems (c. 1765–74; poem dated 1760)
Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Dr. James Stuart; Mary Campbell Stuart, Gilbert Stuart (c. 1815)
Document Box (Ryōshibako) with Chrysanthemum and Plum (lid) (late 1800s-early 1900s)
Document Box (Ryōshibako) with Chrysanthemum and Plum (lid) (late 1800s-early 1900s)

Written or oral procedure

The Calumny of Apelles, Giorgio Ghisi (1560)

Written

On documents
  • Faster
  • Less costly
  • Suited to technical disputes

If the parties agree.

Coronation of the Virgin, Christoffel Jegher (1632–36)

Oral

With a hearing
  • Examinations
  • Direct debates
  • More costly

Useful where there are witnesses.

Preparing for each stage

  1. Requête

    Draft precisely.

  2. Answer

    Gather the arguments.

  3. Tribunal

    Choose the arbitrator.

  4. Brief

    Structure the arguments.

  5. Hearing

    Prepare the witnesses.

Checks at each stage

A deputy registrar

The Dance at the Court of Herod, Israhel van Meckenem (c. 1500)
« Parties who prepare the timetable with us from the outset often gain several weeks. »
Me Hélène Roux, deputy registrar

Vocabulary of stages

Procedural order
Decision setting the rules for the conduct of proceedings.
Reply
Answer to the opponent's brief.
Close of the debates
End of the proceedings.
Correction
Correction of a clerical error.

Frequently asked questions

Can claims be added?

With the tribunal's authorisation.

Who chooses the arbitrators?

The parties, otherwise the council.

Is the award reasoned?

Yes.

Where can I see the time limits?

Useful documents

Contacts

The Apotheosis of Romulus: Design for a Ceiling, Domenico Maria Canuti (c. 1675–76)
The Apotheosis of Romulus: Design for a Ceiling, Domenico Maria Canuti (c. 1675–76)
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 time limits

Fish or Seal Club (X’ús’) (late 1800s–early 1900s)

Timetable and extensions.

Time limits
Image credits (16)
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