ICSID Tribunal Dismisses Silver Bull's $315 Million Claim Against Mexico
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TL;DR
- Silver Bull Resources filed a $315 million mining claim against Mexico at ICSID under NAFTA.
- Mexico argued that the claims were outside NAFTA's scope and time limits.
- The tribunal ruled it lacked jurisdiction and dismissed all claims.
- Silver Bull was ordered to reimburse Mexico for a substantial portion of arbitration costs.
Overview
On 29 May 2026, an ICSID tribunal unanimously dismissed a $315 million arbitration claim brought by U.S.-based Silver Bull Resources against Mexico. The claim, filed in 2023 under the former North American Free Trade Agreement (NAFTA), concerned alleged local interference and project delays involving mining concessions in Coahuila. The tribunal determined it lacked jurisdiction to hear the dispute and ordered Silver Bull to reimburse Mexico for arbitration costs.
What Happened
Silver Bull Resources, through its subsidiary Minera Metalín S.A. de C.V., filed its claim in June 2023, alleging that local authorities and a mining cooperative blocked development of its Sierra Mojada mining project in Coahuila since 2019.
Mexico's defense argued that the alleged facts occurred outside NAFTA's applicable period, the claims were either prescribed or not covered by the treaty, and that Silver Bull lacked capacity to develop the project.
On 29 May 2026, the arbitral tribunal rejected Silver Bull's accusations that Mexico promoted the blockade, found it had no jurisdiction due to the timing and scope of the claims, and dismissed the entire case.
The tribunal also ordered Silver Bull to pay Mexico a relevant sum for arbitration costs, with the amount not specified in the initial public summary.
Context
The case was initiated under NAFTA (TLCAN in Spanish), the North American Free Trade Agreement, through the International Centre for Settlement of Investment Disputes (ICSID), which hears investor-state disputes.
Mexico was represented by the Ministry of Economy and received legal support from international law firms. The full tribunal decision is undergoing confidentiality review and is expected to be published on the ICSID website.
Why It Matters
- The decision confirms limits on post-NAFTA legacy claims and reiterates that not all investment disputes meet jurisdictional requirements under international treaties.
- It underscores the importance of compliance with procedural and timing requirements for investor-state arbitrations.