Ninth Inter-sessional Meeting

5 to 7 November 2025

The 9th intersessional meeting of UNCITRAL Working Group III will be held in Santiago, Chile. The intersessional meeting will focus on procedural and cross-cutting issues for ISDS Reform. 

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• Agenda
• Logistic information and participant guide

Key documents:

• A/CN.9/WG.III/WP.253 - Possible reform of investor-State dispute settlement (ISDS): Draft provisions on procedural and cross-cutting issues 
• A/CN.9/WG.III/WP.254 - Possible reform of investor-State dispute settlement (ISDS): Annotations to draft provisions on procedural and cross-cutting 

Reference documents:

• A/CN.9/1238 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its fifty-second session (Vienna, 22–26 September 2025) - advance copy
• A/CN.9/1196/Add.1 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its fifty-first session, second part (New York, 7–11 April 2025)
• A/CN.9/1195 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its fiftieth session (Vienna, 20–24 January 2025)
• A/CN.9/1194 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its forty-ninth session (Vienna, 23–27 September 2024)
• A/CN.9/1161 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its forty-seventh session (Vienna, 22-26 January 2024)
• A/CN.9/1160 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its forty-sixth session (Vienna, 9–13 October 2023) 
• A/CN.9/1124 - Report of Working Group III (Investor-State Dispute Settlement Reform) on the work of its forty-third session (Vienna, 5-16 September 2022)

• A/CN.9/WG.III/WP.244 - Possible reform of investor-State dispute settlement (ISDS): Draft provisions on procedural and cross-cutting issues
  • Corrigendum to the draft provisions on procedural and cross-cutting issues (A/CN.9/WG.III/WP.244 and A/CN.9/WG.III/WP.245) (unofficial document, English only)
  • Updated compilation of IIA provisions and arbitration rules related to procedural and cross-cutting issues (unofficial document, English only)
• A/CN.9/WG.III/WP.245 - Possible reform of investor-State dispute settlement (ISDS): Annotations to the draft provisions on procedural and cross-cutting issues
• A/CN.9/WG.III/WP.248 - Possible reform of investor-State dispute settlement (ISDS): Additional provisions on procedural and cross-cutting issues and resources available to the Working Group
  • Compilation of IIA provisions and arbitration rules on joint interpretation and submission by a non-disputing Treaty Party (unofficial document, English only)
  • A/CN.9/WG.III/WP.191 - Interpretation of investment treaties by treaty Parties
• A/CN.9/WG.III/WP.231 - Possible reform of investor-State dispute settlement (ISDS): Draft provisions on procedural and cross-cutting issues
• A/CN.9/WG.III/WP.232 - Possible reform of investor-State dispute settlement (ISDS): Annotations to the draft provisions on procedural and cross-cutting issues
  • Compilation of IIA Provisions and Arbitration Rules Related to Procedural and Cross-Cutting Issues (unofficial document, English only)
• A/CN.9/WG.III/WP.219 - Possible reform of investor-State dispute settlement (ISDS): Draft provisions on procedural reform
  • Compilation of selected procedural provisions in recent IIAs (unofficial document, English only)
• A/CN.9/WG.III/WP.220 - Possible reform of investor-State dispute settlement (ISDS): Assessment of damages and compensation

Comments on the procedural and cross-cutting issues (in the language received):

• Compilation of comments on A/CN.9/WG.III/WP.244 (as of 1 April 2025)
• Compilation of comments on A/CN.9/WG.III/WP.248 (as of 18 March 2025)