Case Details

S-Planning Co., Ltd. and others v. Swiss Confederation (ICSID Case No. ARB/26/4)

Subject of Dispute:

Debt instruments
Economic Sector:

Finance
Instrument(s) Invoked:

JSFTEPA (Agreement on Free Trade and Economic Partnership between Japan and the Swiss Confederation)
Applicable Rules:

ICSID Convention - Arbitration Rules

(a) Original Proceeding

Claimant(s)/Nationality(ies):

S-Planning Co., Ltd. and others (Japanese)
Respondent(s):

Swiss Confederation (Swiss)
Date Registered:

January 16, 2026
Date of Constitution of Tribunal:

May 19, 2026

Composition of Tribunal

President:

Wendy J. MILES (New Zealand) - Appointed by the Parties
Arbitrators:

Judith GILL (British) - Appointed by the Claimant(s)
Alexis MOURRE (French) - Appointed by the Respondent(s)

Party Representatives

Claimant(s):

Mori Hamada & Matsumoto, Tokyo, Japan
Miura & Partners, Tokyo, Japan
Respondent(s):

State Secretariat for Economic Affairs SECO, Bern, Switzerland
LKK Arbitration Ltd, Geneva, Switzerland
Language(s) of Proceeding:

English
Status of Proceeding:

Pending
Latest Development:

July 24, 2026 - The Tribunal issues Procedural Order No. 1 concerning procedural matters.

No References Available.

(a) Original Proceeding

Date	Development
January 16, 2026	The Acting Secretary-General registers a request for the institution of arbitration proceedings.
March 6, 2026	Following appointment by the Claimants, Judith Gill (British) accepts her appointment as arbitrator.
March 24, 2026	Following appointment by the Respondent, Alexis Mourre (French) accepts his appointment as arbitrator.
May 19, 2026	Following appointment by agreement of the parties, Wendy J. Miles (New Zealand) accepts her appointment as presiding arbitrator.
May 19, 2026	The Tribunal is constituted in accordance with 37(2)(b) of the ICSID Convention. Its members are: Wendy J. Miles (New Zealand), President, appointed by agreement of the parties; Judith Gill (British), appointed by Claimants; and Alexis Mourre (French), appointed by Respondent.
July 22, 2026	The Tribunal holds a first session with the parties by video conference.
July 24, 2026	The Tribunal issues Procedural Order No. 1 concerning procedural matters.