On appeal from Hulley Enterprises Ltd and others v The Russian Federation [2025] SGHC(I) 19
Practice area International arbitration (investor-State)
Jurisdiction Singapore; Court of Appeal, on appeal from the Singapore International Commercial Court; State Immunity Act 1979; Energy Charter Treaty; with reference to the courts of the Netherlands (the seat) and of England and Wales
Subject matter Enforcement of investment treaty awards; state immunity; transnational issue estoppel
The Singapore Court of Appeal has dismissed Russia’s state immunity appeal in the Yukos enforcement proceedings, holding that transnational issue estoppel can establish the facts on which the arbitration exception to immunity depends.
The former Yukos shareholders hold 2014 ECT awards totalling about US$60 billion plus interest. Russia’s objections to the tribunal’s jurisdiction failed before the Dutch appellate courts. In Singapore, Russia claimed immunity under the State Immunity Act 1979, denying that it had “agreed in writing” to arbitrate within the s 11 exception. The SICC held that Russia was precluded from reopening the Dutch findings.
Russia argued on appeal that the Singapore court must decide immunity for itself de novo, that jurisdiction cannot be conferred by estoppel, that policy places immunity outside the doctrine and (first raised at the hearing) that a 2020 Russian Constitutional Court ruling amounted to special circumstances.
The court distinguished between identifying and applying the principles of state immunity, which remain matters for the Singapore court, and the binding effect of the seat court’s findings of fact, including on Russian law (at [28] and [34]). Nothing in ss 3 and 11 excludes the doctrine, and there is no policy reason why a State alone should be relieved of the consequences of losing fully litigated factual issues in the seat courts (at [63] to [64]). The Constitutional Court ruling came too late and, obtained after hearing only Russia’s side, could not be assimilated with ordinary jurisprudence (at [77] to [78]).
The decision aligns Singapore with the English Court of Appeal in Hulley Enterprises Ltd v Russian Federation [2025] EWCA Civ 108.
Link to judgment: www.elitigation.sg/gd/s/2026_SGCAI_5
