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Hiroshi Osumi v. Swiss Confederation, ICSID Case No. ARB/26/1

Available documents

7 Jan 2026
Registration of the Request for Arbitration
Document Details:
Participants listed are for this document only and may not include all participants involved in the entire case. Always consult the original documents.
Claimant appointee
Respondent appointee
Tribunal/Panel chair
Arbitrator(s)
Sole Arbitrator
ICSID Annulment Committee president
ICSID Annulment Committee members
WTO Appellate Body members
WTO Appellate Body chair
Judges
Claimant's counsel
Respondent's counsel
Other counsel
Claimant's expert
Respondent's expert
Claimant's witness
Respondent's witness
Other witnesses
Tribunal secretary
Tribunal assistant
Country
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Entities
This summary note is machine-generated. Always consult the original materials.


10 Jul 2026
Procedural Order No. 1
Document Details:
PARTICIPANTS
Procedural Order No. 1
Participants listed are for this document only and may not include all participants involved in the entire case. Always consult the original documents.
Claimant appointee
Respondent appointee
Tribunal/Panel chair
Chair/President:
Sole Arbitrator
ICSID Annulment Committee president
ICSID Annulment Committee members
WTO Appellate Body members
WTO Appellate Body chair
Judges
Other counsel
Claimant's expert
Respondent's expert
Claimant's witness
Respondent's witness
Other witnesses
Tribunal secretary
Tribunal assistant
Country
Print reporter
Document Summary
Procedural Order No. 1
This summary note is machine-generated. Always consult the original materials.

Procedural Background

This Procedural Order No. 1 establishes the procedural framework for the arbitration proceedings conducted under the ICSID Arbitration Rules (2022). Following the first session held on June 29, 2026, the Tribunal issued this Order to govern matters including the applicable arbitration rules, the routing of communications, the submission of pleadings, and the logistical parameters for hearings and document production.

Document Production and Claimant's Pending Request

The Order sets forth the standard mechanism for document production utilizing a Stern Schedule, guided by the IBA Rules on the Taking of Evidence in International Arbitration. Notably, the Tribunal addressed a pending request made by the Claimant in its Request for Arbitration for the production of 592 documents referenced in a report by a Swiss Parliamentary Commission of Inquiry. The Tribunal denied this early request without prejudice. In its reasoning, the Tribunal emphasized that at this nascent stage of the proceedings, prior to the Respondent filing its defense, it was unable to properly assess the relevance and materiality of the requested documents. Furthermore, the Tribunal found no urgent necessity to order production before the standard document production phase.

Procedural Calendar and Bifurcation Scenarios

The Tribunal adopted a comprehensive procedural calendar, detailed in Annex B, which accommodates multiple procedural trajectories. The schedule provides specific timelines for scenarios in which the Respondent requests bifurcation, and subsequent tracks depending on whether such bifurcation is granted or denied by the Tribunal. The calendar also incorporates provisions for potential non-disputing party submissions by Japan pursuant to Article 94(10) of the Japan-Switzerland Free Trade Agreement.



10 Jul 2026
Procedural Order No. 2 on Transparency and Confidentiality
Document Details:
PARTICIPANTS
Procedural Order No. 2 on Transparency and Confidentiality
Participants listed are for this document only and may not include all participants involved in the entire case. Always consult the original documents.
Claimant appointee
Respondent appointee
Tribunal/Panel chair
Chair/President:
Sole Arbitrator
ICSID Annulment Committee president
ICSID Annulment Committee members
WTO Appellate Body members
WTO Appellate Body chair
Judges
Claimant's counsel
Respondent's counsel
Other counsel
Claimant's expert
Respondent's expert
Claimant's witness
Respondent's witness
Other witnesses
Tribunal secretary
Tribunal assistant
Country
Print reporter
Entities
Document Summary
Procedural Order No. 2 on Transparency and Confidentiality
This summary note is machine-generated. Always consult the original materials.

Procedural Background

This document constitutes Procedural Order No. 2, issued by the Tribunal in the ICSID arbitration between Hiroshi Osumi and the Swiss Confederation (ICSID Case No. ARB/26/1). The Order establishes the comprehensive confidentiality and transparency regime governing the proceedings, following consultations with the parties during the first session held on June 29, 2026. The applicable legal framework includes the Japan-Switzerland Free Trade and Economic Partnership Agreement, the ICSID Convention, and the 2022 ICSID Arbitration Rules.

Confidentiality and Transparency Regime

The Tribunal directed that, subject to specific exceptions, all documents created or produced in the context of the arbitration shall remain confidential. The Order delineates the scope of protected information, encompassing confidential business data, protected personal information, and materials implicating essential security interests. Regarding transparency, the parties consented to the publication of the final Award by ICSID, subject to agreed redactions. However, the parties expressly withheld consent for the publication of their written submissions and supporting documents, and the Tribunal confirmed that hearings shall remain closed to the public.

Redaction Protocol

To operationalize these transparency parameters, the Tribunal instituted a structured redaction protocol. Parties are afforded a 21-day period to request the non-disclosure of protected information in publishable documents, followed by a 14-day window for objections. In the event of unresolved disputes over proposed redactions, the Tribunal shall adjudicate the contested items via a formalized Transparency Schedule.