1. Mason Capital L.P. (U.S.A.) 2. Mason Management LLC (U.S.A.) v. Republic of Korea

The PCA acts as registry in this arbitration, which is being conducted under the UNCITRAL Arbitration Rules 1976 pursuant to the Free Trade Agreement between the Republic of Korea and the United States of America of 30 June 2007.

상설중재재판소는 대한민국과 미합중국 간의 자유무역협정(2007.06.30)에 의거 유엔 국제무역법위원회의 중재규칙(1976)에 따라 진행되는 동 중재의 사무국으로 활동합니다.

Case information

Name(s) of Claimant(s) (1) Mason Capital L.P. (U.S.A.) (Private entity )
(2) Mason Management LLC (U.S.A.) (Private entity )
Name(s) of Respondent(s) Republic of Korea (State)
Names of Parties -
Case number 2018-55
Administering institution Permanent Court of Arbitration (PCA)
Case status Concluded
Type of case Investment arbitration
Subject matter or economic sector - Other -
Procedural rules UNCITRAL Arbitration Rules 1976
Treaty or contract under which proceedings were commenced

Bilateral treaty
Free Trade Agreement between the Republic of Korea and the United States of America
Country A: Korea, Republic of
Country B: United States

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

Professor Dr. Klaus Sachs
The Rt. Hon. Dame Elizabeth Gloster
Professor Pierre Mayer

Representatives of the Claimant(s)

Ms. Sophie J. Lamb KC
Mr. Samuel Pape
Ms. Alice Zhou
Latham & Watkins LLP


Ms. Lilia B. Vazova
Ms. Sarah Burack
Latham & Watkins LLP


Mr. Wonsuk (Steve) Kang
Latham & Watkins LLP


Mr. Beomsu Kim
Ms. Woo Ji Kim 
Baker McKenzie & KL Partners Joint Venture Law Firm 

Representatives of the Respondent(s)

Mr. Paul Friedland
Mr. Damien Nyer
Mr. Sven Volkmer
Mr. Surya Gopalan
White & Case LLP


Mr. Moon Sung Lee
Mr. Sanghoon Han
Mr. Joon Won Lee
Mr. Han-Earl Woo
Mr. Minjae Yoo
Ms. Yoo Lim Oh
Ms. Suejin Ahn
Lee & Ko

Representatives of the Parties
Number of Arbitrators in case 3
Date of commencement of proceeding 13 September 2018
Date of issue of final award 11 April 2024
Length of Proceedings More than 4 years
Additional notes

Pursuant to Article 11.21.1 of the Free Trade Agreement, and with the agreement of the Parties, the PCA will make available to the public, on the present website, the below-listed information and documents:


(a) the notice of intent;

(b) the notice of arbitration;

(c) pleadings, memorials, and briefs submitted to the tribunal by a disputing party and any written submissions submitted pursuant to Article 11.20.4 and 11.20.5 and Article 11.25;

(d) minutes or transcripts of hearings of the tribunal, where available; and

(e) orders, awards, and decisions of the tribunal.


상설중재재판소는 한미자유무역협정 제 11.21 조 제 1 항 및 당사자들의 합의에 따라, 하단에 명시된 정보 및 문서를 재판소의 누리집에 개시하여 일반의 이용이 가능하도록 합니다.




(다)분쟁 당사자가 중재판정부에 제출한 변론서, 이의제기서면 및 준비서면과 FTA 제11.20조 제4, 5항 및 제11.25조에 따라 제출된 모든 서면입장

(라)가능한 경우 중재판정부의 심리 기록 또는 회의록

(마)중재판정부의 명령, 판정 및 결정문


Notice of Arbitration
Notice of Arbitration and Statement of Claim
Written submission
Memorial on Preliminary Objections
본안전 이의제기 서면
Counter-Memorial on Preliminary Objections
본안전 이의제기에 대한 반박서면
Reply on Preliminary Objections
본안전 이의제기에 대한 답변서
Rejoinder on Preliminary Objections
본안전 이의제기에 대한 재반박서면
Amended Statement of Claim
수정 청구서면
Statement of Defence
Submission of the United States of America
Statement of Reply and Defence to Objections to Jurisdiction
청구인들의 재반박 및 관할 이의제기에 대한 반박서면
Statement of Rejoinder and Reply on Objections to Jurisdiction
재반박 및 관할 이의제기에 대한 답변서
Claimants' Post-Hearing Brief
Respondent's Post-Hearing Brief
피청구국의 심리 후 주장서면
Statement of Rejoinder on Objections to Jurisdiction
청구인들의 관할 이의제기에 대한 재항변서면
Procedural Documents
Procedural Order No. 1
절차 명령 제 1 호
Procedural Order No. 2
절차 명령 제 2 호
Procedural Order No. 3
절차 명령 제 3 호
Procedural Order No. 4
절차 명령 제 4 호
Procedural Order No. 5
절차 명령 제 5 호
Procedural Order No. 6
절차 명령 제 6 호
Procedural Order No. 7
절차 명령 제 7 호
Procedural Order No. 8
절차 명령 제 8 호
Procedural Order No. 9
절차 명령 제 9 호
Procedural Order No. 10
절차 명령 제 10 호
Procedural Order No. 11
절차 명령 제 11 호
Award or other decision
Decision on Respondent's Preliminary Objections
피청구국의 본안전 이의제기에 대한 결정
Final Award
Press Release
Press Release
Press Release
Press Release
Notice of Intent
Hearing Transcript
Hearing Transcript
Hearing Transcript
Hearing Transcript Day 1
Hearing Transcript Day 2
Hearing Transcript Day 3
Hearing Transcript Day 4
Hearing Transcript Day 5
Hearing Transcript Day 6