Following appointment by the Respondent, Miloš Olík (Czech) accepts his appointment as arbitrator.

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

Following appointment by the Chairman of the Administrative Council in accordance with Article 38 of the ICSID Convention, Jean E. Kalicki (U.S.) accepts her appointment as presiding arbitrator.

The Tribunal is constituted in accordance with Article 37(2)(b) of the ICSID Convention.  Its members are: Jean E. Kalicki (U.S.), President, appointed by the Chairman of the Administrative Council in accordance with Article 38 of the ICSID Convention; Guido Tawil (Argentine), appointed by the Claimants; and Miloš Olík (Czech), appointed by the Respondent.

The Tribunal holds a first session by telephone conference.

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

The Claimants file a memorial on the merits.

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

The Respondent files a request to address an objection to jurisdiction as a preliminary question.

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

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

The Tribunal issues Procedural Order No. 2 on the non-disputing party’s application to file a written submission pursuant to ICSID Arbitration Rule 37(2) and the Respondent’s request to address an objection to jurisdiction as a preliminary question; as a result, the objection to jurisdiction is joined to the merits of the dispute.

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

The Respondent files observations on the Claimants’ request for the Tribunal to decide on production of documents.

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

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

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

Each party files observations on one of the Respondent’s jurisdictional objections.

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

The Tribunal issues Procedural Order No. 4 concerning production of documents.

Each party files a response to the other party’s observations of March 29, 2019.

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

The Tribunal issues Procedural Order No. 5 concerning the organization of the hearing.

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

The Tribunal holds a hearing on jurisdiction in Washington, D.C.

The Tribunal issues Procedural Order No. 7 concerning the procedural calendar.

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

The Claimants present an ancillary claim.

The Respondent files observations on the ancillary claim.

The Claimants files a response to the Respondent’s observations of October 7, 2019.

Each party files a post-hearing brief.

The Respondent files further observations on the Claimants’ response of October 15, 2019.

The Tribunal issues Procedural Order No. 8 concerning its decision on the ancillary claim.

Each party files a reply post-hearing brief.

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

The Claimants file a supplement to the reply on the merits on the ancillary claim.

The Tribunal issues Procedural Order No. 10 concerning production of documents.

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

Each party files a submission on costs.

The Tribunal issues Procedural Order No. 12 concerning procedural matters.

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

The Tribunal issues Procedural Order No. 13 concerning production of documents.

Following exchanges between the parties, the Claimants file a request for the Tribunal to decide on production of documents.

The Respondent files observations on the Claimants’ request for the Tribunal to decide on production of documents.

The Claimants file a response to the Respondent’s observations of April 9, 2020.

The Respondent files further observations on the request for of April 3, 2020.

The Claimants file a response to the Respondent’s further observations of April 16, 2020.

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

The Claimants file a rejoinder on jurisdiction.

The Tribunal issues Procedural Order No. 15 concerning production of documents.

The Tribunal issues a decision on an objection to jurisdiction.

The Tribunal issues Procedural Order No. 16 concerning the hearing.

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

The Tribunal issues Procedural Order No. 17 concerning the organization of the hearing.

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

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

The Claimants file a statement of costs.

The Respondent files a statement of costs.

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

The Claimants file observations on the Respondent’s request for the Tribunal to decide on production of documents.

The Tribunal issues Procedural Order No. 18 concerning production of documents.

The Respondent files a proposal for disqualification of arbitrator Jean E. Kalicki. The proceeding is suspended in accordance with ICSID Arbitration Rule 9(6).

The Claimants file observations on the proposal for disqualification.

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

The Respondent files observations on the proposal for disqualification.

The Claimants file further observations on the proposal for disqualification.

The Respondent files further observations on the proposal for disqualification.

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

The Tribunal is reconstituted. Its members are: Campbell McLachlan (New Zealand), President, appointed by the Chairman of the Administrative Council in accordance with ICSID Arbitration Rule 11(2); Guido Tawil (Argentine), appointed by the Claimants; and Miloš Olík (Czech), appointed by the Respondent. The proceeding is resumed pursuant to ICSID Arbitration Rule 12.

The Tribunal holds a case management conference with the parties by video conference. 

The Tribunal issues Procedural Order No. 19 concerning the procedural calendar.

The Tribunal poses questions to the parties’ experts.

The parties’ experts file a joint report answering questions posed by the Tribunal on March 20, 2026.

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.

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

The Claimant files observations on the Respondent’s request of June 27, 2026.

The Respondent files a response to the Claimants’ observations of June 30, 2026.

The Claimant files a rejoinder to the Respondent’s response of July 1, 2026. 

The Tribunal issues Procedural Order No. 21 concerning the admissibility of new evidence.

The Tribunal holds a hearing on final oral submissions in London.