The Secretary-General registers a request for the institution of arbitration proceedings. 

Following appointment by the Claimants, Guido Santiago Tawil (Argentine/Portuguese) accepts his appointment as arbitrator.

Following appointment by the Respondent, Hugo Perezcano Díaz (Mexican) accepts his appointment as arbitrator.

Following appointment by the Secretary-General pursuant to the parties’ agreement, Ali Malek (British/Iranian) accepts his appointment as presiding arbitrator.

The Tribunal is constituted in accordance with Article 37(2)(a) of the ICSID Convention.  Its members are Ali Malek (British/Iranian), President, appointed by the Secretary-General pursuant to the parties’ agreement; Guido Santiago Tawil (Argentine/Portuguese), appointed by the Claimants; and Hugo Perezcano Díaz (Mexican), appointed by the Respondent.

The Tribunal holds a first session by video conference.

The Tribunal issues Procedural Order No. 1 concerning procedural matters.

The Claimants file a memorial on the merits.

The Respondent files a request to address the objections to jurisdiction as a preliminary question.

The Claimants file observations on the request to address the objections to jurisdiction as a preliminary question.

The Tribunal issues Procedural Order No. 2 concerning the Respondent’s request to address the objections to jurisdiction as a preliminary question; as a result, objection to jurisdictions are joined to the merits of the dispute.

The Respondent files a counter-memorial on the merits and a memorial on jurisdiction.

Each party files a request for the Tribunal to decide on production of documents.

The Tribunal issues Procedural Order No. 3 concerning production of documents.

The Claimants file a reply on the merits and a counter-memorial on jurisdiction.

The Respondent files a rejoinder on the merits and a reply on jurisdiction.

The Claimants file a rejoinder on jurisdiction.

The Tribunal holds a pre-hearing organizational meeting with the parties by video conference.

The Tribunal issues Procedural Order No. 4 concerning the organization of the hearing.

The Tribunal holds a hearing on jurisdiction and the merits in London.

The Claimants file a request for the Tribunal to decide on the admissibility of new evidence.

The Respondent files a request for the exclusion of evidence.

The Claimants file observations on the Respondent’s request of March 28, 2024.

The Respondent files a response to the Claimants’ observations of April 2, 2024.

The Claimants file further observations on the request of March 28, 2024.

The Respondent files observations on the Claimants’ request of March 15, 2024.

The Claimants file a response to the Respondent’s observations of May 2, 2024.

The Tribunal issues Procedural Order No. 5 concerning the exclusion of evidence.

The Respondent files a request for the Tribunal to decide on the admissibility of new evidence.

The Tribunal issues Procedural Order No. 6 concerning the admissibility of new evidence.

Each party files a post-hearing brief.

The Claimants file observations on the Respondent’s request of May 29, 2024.

The Tribunal issues Procedural Order No. 7 concerning the admissibility of new evidence.

The Claimants file observations on the Respondent’s additional evidence.

The Respondent files a reply on the Claimants’ observations of July 5, 2024.

Each party files a submission on costs.

A non-disputing party files an application to file a written submission pursuant to ICSID Arbitration Rule 37(2).

Each party files observations on the non-disputing party’s application.

The Tribunal issues Procedural Order No. 8 concerning the non-disputing party’s application to file a written submission pursuant to ICSID Arbitration Rule 37(2).

The non-disputing party files a written submission pursuant to ICSID Arbitration Rule 37(2).

Each party files observations on the non-disputing party’s written submission.

The Respondent files a request for the Tribunal to decide on the admissibility of new evidence.

The Claimants file observations on the Respondent’s request of April 30, 2025, and a request for the Tribunal to decide on the admissibility of new evidence.

The Tribunal decides on the Respondent’s request of April 30, 2025, and the Claimants’ request of May 1, 2025.