Westmoreland v Canada

Abstract

This case- note focuses on the award issued in Westmoreland Mining Holding LLC V Government of Canada on 31 January 2022. The decision sets a relevant precedent against the transferability of treaty claims. The tribunal held that it lacked jurisdiction ratione temporis to decide a claim brought by the assignee of a treaty claim, considering that the claimant was not the investor that owned or controlled the investment at the time of the alleged breach. This case-note summarises the award and offers an analysis on the transferability of treaty claims, proposing that the ratione temporis requirement should not defeat the jurisdiction of tribunals facing claims brought by assignees.