The First Civil Chamber of the Paris Court of Appeal, by its judgment of 29 January 2019, partially annulled an international investment arbitration award rendered in Paris on 22 August 2016 in the arbitration proceedings between the Bolivarian Republic of Venezuela (hereinafter “Venezuela”) and the Canadian company Rusoro Mining Ltd (hereinafter “Rusoro”). The Court’s judgment has attracted the attention of the doctrine for several reasons. First, it was the first time that the Court held that a time-limit for submitting a dispute to arbitration, stipulated in a bilateral investment treaty, should be qualified as a condition ratione temporis of the State’s consent to arbitration, and not as a statute of limitations. Second, the Court’s judgment surprised the arbitral community by undertaking an extensive review, including on the facts, of the arbitral tribunal’s compliance with the scope of its jurisdiction ratione temporis. This extensive examination led the Court to review the method applied by the arbitral tribunal for the calculation of damages.