- South Korea Seals US$196mn ICSID Win as Chinese Investor’s Annulment Bid Fails
South Korea has secured a decisive victory in a US$196 million investor-state dispute after an International Centre for Settlement of Investment Disputes ad hoc committee rejected Chinese investor Fengzhen Min’s attempt to annul an award that had dismissed his treaty claims against Seoul.
The committee issued its decision on September 11, bringing to a close an annulment proceeding that began after an ICSID tribunal ruled in South Korea’s favour in May 2024 in a dispute arising from Min’s investment in a real-estate project connected to an office development in Beijing.
The case, Fengzhen Min v. Republic of Korea, was brought under the 2007 bilateral investment treaty between China and South Korea and involved claims that ultimately stood at about 264.1 billion won, equivalent to roughly US$196 million.
Min had initially sought about 2 trillion won before reducing the quantum during the arbitration. The dispute traced back to financing arrangements involving Pi Korea, a company he established in South Korea in 2007, which raised about 380 billion won in project-finance loans arranged and guaranteed by Woori Bank.
When the company failed to repay the loans, the bank sold shares it had received as collateral. Min challenged the transaction through South Korea’s courts but ultimately lost at the Supreme Court in 2017.
He subsequently commenced ICSID proceedings in 2020, alleging that the disposal of the shares and South Korea’s civil and criminal judicial proceedings breached protections contained in the China-South Korea investment treaty.
The original tribunal, comprising Ian Glick as president, Stephen Drymer and Donald McRae, rendered its award on May 30, 2024. It rejected Min’s claim after finding that the establishment of Pi Korea and acquisition of the relevant shares formed part of an illegal scheme used to obtain project-financing loans.
The tribunal also ordered Min to reimburse South Korea about 4.9 billion won in legal costs, together with interest.
Min then sought annulment, arguing, among other things, that the tribunal had misinterpreted the investment treaty and Korean law and had failed to provide him with sufficient opportunity to present his case.
His annulment application was formally registered by ICSID on October 2, 2024.
An ad hoc committee chaired by Singaporean arbitrator Cavinder Bull and including Mairée Urán Bidegain and David Pawlak was constituted the following month. Written proceedings continued through 2025 before the committee held an annulment hearing in Singapore on February 25 and 26, 2026.
The committee ultimately dismissed Min’s application in its entirety, leaving the 2024 award intact. It also ordered him to pay South Korea approximately 1.51 billion won in costs associated with the annulment proceedings, plus interest.
South Korea’s Justice Ministry described the decision as reaffirming the principle that investments made in violation of domestic law cannot automatically claim protection under the investor-state dispute settlement framework.
That principle gives the dispute significance beyond the immediate US$196 million claim.
Investment treaties generally protect qualifying foreign investments against state conduct such as unlawful expropriation, unfair treatment or discrimination. But tribunals have repeatedly had to determine whether investments created or operated contrary to host-state law qualify for those protections in the first place.
The Min dispute placed that legality question squarely at the centre of South Korea’s defence.
The annulment outcome is also important because ICSID annulment is fundamentally different from an ordinary appeal.
Article 52 of the ICSID Convention permits an award to be annulled only on limited grounds, including improper constitution of the tribunal, manifest excess of powers, corruption, serious departure from a fundamental rule of procedure or failure to state reasons. ICSID itself describes annulment as an “exceptional recourse” designed to safeguard fundamental legal principles concerning the arbitral process rather than provide a rehearing of the merits.
The committee was therefore not being asked simply to decide whether it agreed with every legal or factual conclusion reached by the original tribunal.
Its task was to determine whether the award suffered from one of the specific defects capable of triggering annulment under the Convention.
By rejecting the application in full, the committee has allowed the substantive findings against Min to stand and ended the particular annulment route available against the award. ICSID states that rejection of an annulment application leaves the original award intact, while the committee’s annulment decision itself is not subject to a further annulment proceeding.
For South Korea, the result removes a potential US$196 million treaty liability while reinforcing its successful defence of the legality objection.
For investors and governments more broadly, the case carries a sharper message: treaty protection is not necessarily insulated from the manner in which an investment was originally structured or obtained.
The final outcome therefore extends beyond one Chinese investor and one Korean real-estate financing dispute. It reinforces both the high threshold required to disturb an ICSID award and the growing importance of investment legality as states scrutinise whether claimants seeking international protection entered the investment relationship on legally defensible foundations.
