Zeph Investments Pte. Ltd. v. The Commonwealth of Australia

Case information

Name(s) of Claimant(s) Zeph Investments Pte. Ltd. (Private entity )
Name(s) of Respondent(s) The Commonwealth of Australia (State)
Names of Parties -
Case number 2023-40
Administering institution Permanent Court of Arbitration (PCA)
Case status Pending
Type of case Investment arbitration
Subject matter or economic sector -
Procedural rules UNCITRAL Arbitration Rules 2021
Treaty or contract under which proceedings were commenced

Multilateral treaty
The Agreement Establishing the ASEAN–Australia–New Zealand Free Trade Area (AANZFTA)

Language of Proceeding English
Seat of Arbitration (by Country) Switzerland
Arbitrator(s), Conciliator(s), Other Neutral(s)

Professor Gabrielle Kaufmann-Kohler (Presiding Arbitrator)
Mr. William Kirtley
Professor Donald McRae


Mr. Lukas Montoya (Secretary of the Tribunal)

Representatives of the Claimant(s)

Mr. Clive F. Palmer
Mr. George Spalton KC
Dr. Anna Kirk
Mr. Kris Byrne
Mr. Michael Sophocles
Mr. Sam Iskander
Ms. Anna Palmer
Mr. Shane Bosma
Ms. Baljeet Singh
Mr. Thomas Browning
Mr. Daniel Jacobson
Mr. George Sokolov

Representatives of the Respondent(s)

Mr. Jesse Clarke
Mr. James Mason
Attorney-General’s Department


Dr. Stephen Donaghue KC
Solicitor-General of Australia


Mr. Sam Wordsworth KC
Dr. Naomi Hart
Essex Court Chambers


Prof. Chester Brown
7 Wentworth Selborne Chambers


Ms. Anna Garsia
12 Wentworth Selborne Chambers

Representatives of the Parties
Number of Arbitrators in case 3
Date of commencement of proceeding 29 March 2023
Date of issue of final award -
Length of Proceedings Pending
Additional notes -


Procedural Documents
Procedural Order No. 1
Terms of Appointment
Decision on the Seat of the Arbitration
Procedural Order No. 2
Procedural Order No. 3