Following appointment by the Secretary-General, Christopher Greenwood (British) accepts his appointment as presiding arbitrator.

The Tribunal is constituted in accordance with Article 37(2)(a) of the ICSID Convention. Its members are: Christopher Greenwood (British), President, appointed by the Secretary-General pursuant to the parties’ agreement; Charles Poncet (Swiss), appointed by the Claimants; and Rodrigo Oreamuno (Costa Rican), appointed by the Respondent.

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

The Tribunal issues Procedural Order No. 4 concerning the procedural calendar and production of documents.

The Tribunal issues Procedural Order No. 6 concerning procedural matters.

The Tribunal issues Procedural Order No. 7 concerning procedural matters.

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

Following exchanges between the parties, each party files a request for the Tribunal to decide on production of documents.

The Tribunal issues Procedural Order No. 8 concerning production of documents.

The Tribunal issues Procedural Order No. 9 concerning production of documents.

The Tribunal issues Procedural Order No. 10 concerning procedural matters.

The Tribunal issues Procedural Order No. 11 concerning production of documents.

The Tribunal issues Procedural Order No. 12 concerning production of documents.

The Tribunal issues Procedural Order No. 13 concerning production of documents and other procedural matters.

The Tribunal issues Procedural Order No. 14 concerning the procedural calendar.

The Respondent files a submission on an objection to jurisdiction.

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

The Claimants file observations on the non-disputing party’s application.

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

The Tribunal issues Procedural Order No. 15 concerning the non-disputing party’s application to file a written submission pursuant to ICSID Arbitration Rule 37(2).

The Claimants file a response submission on an objection to jurisdiction.

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

The President of the Tribunal holds a pre-hearing organizational meeting with the parties by telephone conference.

The Tribunal issues Procedural Order No. 16 concerning the organization of the hearing and the admissibility of new evidence.

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

The Respondent files observations on the Claimants’ request of December 12, 2018.

The Tribunal decides on the admissibility of new evidence.

The Tribunal holds a hearing on jurisdiction in London.

Each party files a statement of costs.

Each party files a reply statement of costs.

The Tribunal issues a decision on an objection to jurisdiction.

The Tribunal issues Procedural Order No. 17 concerning procedural matters.

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

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

The Tribunal issues Procedural Order No. 18 concerning the non-disputing party’s application to file a written submission pursuant to ICSID Arbitration Rule 37(2).

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

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

The Respondent files a proposal for disqualification of the three members of the Tribunal. The proceeding is suspended in accordance with ICSID Arbitration Rule 9(6).

The Claimants file observations on the proposal for disqualification.

Each member of the Tribunal furnishes explanations regarding the proposal for disqualification in accordance with ICSID Arbitration Rule 9(3).

The parties file additional observations on the proposal for disqualification.

The proposal for disqualification of Christopher Greenwood, Charles Poncet and Rodrigo Oreamuno is declined by the Chairman of the Administrative Council.  The proceeding is resumed pursuant to ICSID Arbitration Rule 9(6).

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

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

The Respondent files observations on the Claimants’ request of December 24, 2019.

The Tribunal decides on the admissibility of a new document.

The Claimants file an updated expert report.

The Claimants file a rejoinder on jurisdiction.

The President of the Tribunal holds a pre-hearing organizational meeting with the parties by telephone conference.

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

The Tribunal issues Procedural Order No. 19 concerning the organization of the hearing.

The Claimants file observations on the Respondent’s request of March 4, 2020.

The Tribunal decides on the admissibility of new documents.

The Respondent files an updated expert report.

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

The Tribunal issues Procedural Order No. 20 concerning the organization of the hearing and other procedural matters.

The Respondent files a proposal for disqualification of the three members of the Tribunal. The proceeding is suspended in accordance with ICSID Arbitration Rule 9(6).

The Claimants file observations on the proposal for disqualification.

The three members of the Tribunal furnish explanations regarding the proposal for disqualification in accordance with ICSID Arbitration Rule 9(3).

The Respondent files additional observations on the proposal for disqualification.

Two members of the Tribunal furnish additional explanations regarding the proposal for disqualification in accordance with ICSID Arbitration Rule 9(3).

The Respondent files additional observations on the proposal for disqualification.

Two members of the Tribunal furnish additional explanations regarding the proposal for disqualification in accordance with ICSID Arbitration Rule 9(3).

The Claimants file additional observations on the proposal for disqualification.

An arbitrator furnishes further explanations regarding the proposal for disqualification in accordance with ICSID Arbitration Rule 9(3).

An arbitrator furnishes further explanations regarding the proposal for disqualification in accordance with ICSID Arbitration Rule 9(3).

The Claimants file additional observations on the proposal for disqualification.

The Respondent files additional observations on the proposal for disqualification.

The proposal for disqualification of Christopher Greenwood, Charles Poncet and Rodrigo Oreamuno is declined by the Chairman of the Administrative Council.  The proceeding is resumed pursuant to ICSID Arbitration Rule 9(6).

The Claimants file a request for the bifurcation of the proceeding.

The Respondent files observations on the Claimants’ request of January 15, 2021.

The Claimants file further observations on the Claimants’ request of January 15, 2021.

The Respondent files further observations on the Claimants’ request of January 15, 2021.

Following the resignation of arbitrator Rodrigo Oreamuno, the Secretary-General notifies the parties of the vacancy on the Tribunal and the proceeding is suspended pursuant to ICSID Arbitration Rule 10(2).

Following the resignation of Rodrigo Oreamuno, Thomas Clay (French) accepts his appointment as arbitrator, appointed by the Respondent in accordance with ICSID Arbitration Rule 11(1).

The Tribunal is reconstituted.  Its members are:  Christopher Greenwood (British), President, appointed by the Secretary-General pursuant to the parties’ agreement; Charles Poncet (Swiss), appointed by the Claimants; and Thomas Clay (French), appointed by the Respondent in accordance with ICSID Arbitration Rule 11(1).  The proceeding is resumed pursuant to ICSID Arbitration Rule 12.

The Tribunal issues Procedural Order No. 21 concerning the organization of the hearing.

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

The Claimants file observations on the Respondent’s request of September 10, 2021.

The Tribunal decides on the admissibility of a new document.

The Respondent files a request for reconsideration of the Tribunal's Decision of February 25, 2019.

The Claimants file observations on the Respondent’s request of October 1, 2021.

The Tribunal decides on the Respondent’s request of October 1, 2021.

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

The Claimants file observations on the Respondent’s request of March 25, 2022.

The Tribunal issues Procedural Order No. 22 concerning the organization of the hearing.

The Tribunal decides on the Respondent’s request of March 25, 2022.

The Tribunal holds a hearing on jurisdiction, the merits and quantum by video conference.

Each party files a post-hearing brief.

Each party files a reply post-hearing brief.

The Respondent files a request for reconsideration of the Tribunal's Decision of November 11, 2021.

The Claimants file rejoinder observations on the Respondent’s request of December 27, 2022.

The Claimants file observations on the Respondent’s request of December 27, 2022.

The Respondent files reply observations on its request of December 27, 2022.

The Claimants file rejoinder observations on the Respondent’s request of December 27, 2022.

The Respondent files a submission on costs.

The Claimants file a submission on costs.

The Tribunal decides on the Respondent’s request of December 27, 2022.

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

The Respondent files observations on the Claimants’ request of September 29, 2023.

The Claimant files reply observations on the Claimants’ request of September 29, 2023.

The Respondent files rejoinder observations on the Claimants’ request of September 29, 2023.

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