Global Arbitration Review (GAR) recently reported on two decisions by the Swiss Federal Supreme Court concerning a US$211 billion investment treaty claim against the Commonwealth of Australia . Shayan Farhad acted as legal counsel to the claimant, Singapore-registered holding company Zeph Investments Pte. Ltd. , in the Swiss set-aside and revision proceedings. The Scale of the Dispute Unprecedented Claims: The underlying UNCITRAL arbitration involved a claim valued at US$211 billion (A$300 billion) brought under the ASEAN-Australia-New Zealand Free Trade Agreement (AANZFTA) regarding the Balmoral South iron ore project in Western Australia. Interrelated Multi-Billion Dollar Arbitrations: The challenge forms part of a broader series of four treaty claims seeking over US$290 billion in total damages relating to major energy and mining developments. Prominent Arbitral Tribunal: The underlying Geneva-seated award was issued by a tribunal chaired by Swiss arbitrator Gabrielle Kaufmann-Kohler, together with William Kirtley and Donald McRae. Key Issues Before the Swiss Supreme Court Representing Zeph Investments before Switzerland's highest judicial authority, Shayan Farhad advanced arguments addressing complex questions of public international law and Swiss arbitration civil procedure: Interpretation of Investment Treaties: The Court reviewed the tribunal's interpretation of "covered investment" and "contribution" requirements under the AANZFTA, specifically regarding share swaps, corporate restructurings, and management actions. Procedural Safeguards & Review: The applications raised critical questions concerning arbitrator time commitment, independence and impartiality standards, and procedural rights under Swiss arbitration law. While the Swiss Federal Supreme Court ultimately dismissed the set-aside and revision applications and upheld the jurisdictional award, the litigation represents one of the largest and most complex investment treaty disputes ever brought before the Swiss courts. Demonstrating High-Stakes Cross-Border Expertise Handling challenges of this magnitude before the highest judicial authority in Switzerland highlights Shayan Farhad and FARLEGAL's core mission: providing boutique, high-caliber legal representation in complex, ultra-high-stakes international disputes. The full articles can be accessed on the Global Arbitration Review (GAR) platform: Mining magnate fails to revive mega-claim against Australia More light on mining investor’s failure to revive mega-claim - Global Arbitration Review