KOH Swee Yen, Senior Counsel, is the Head of the International Arbitration Practice and a Partner in the Commercial & Corporate Disputes and Commodities & International Trade Practices.  

Her practice has a particular focus on complex, high-value and multi-jurisdictional disputes, across sectors ranging from commodities, energy, finance, healthcare, infrastructure, international trade, investment, joint ventures, transport and technology. She regularly appears before the Singapore Courts (including the Singapore International Commercial Court) and in international commercial and investment arbitrations under the major institutional rules, including ICSID, ICC, ICDR, LCIA, SIAC, and UNCITRAL. She is known for her extensive expertise and experience in arbitration related court proceedings, and has argued numerous ground-breaking and landmark cases. She is admitted to the Roll of Solicitors of England & Wales and also has rights of audience before the DIFC Courts. 

As arbitrator, she has experience as President, co-arbitrator and sole arbitrator in HKIAC, ICC, LCIA, SCC and SIAC administered arbitrations, and is on the Panel of Arbitrators of various institutions, including AIAC, BICAM, BAC/BIAC, HKIAC, KCAB and SIAC. She is designated by Singapore to the ICSID Panel of Arbitrators, being one of only four designees. 

Swee Yen graduated with First Class Honours from the National University of Singapore (NUS). She was awarded the Singapore Academy of Law prize for being the top student in her final year, and won subject prizes for Evidence and Procedure and Intellectual Property Law. Swee Yen served as a Justices' Law Clerk to the Chief Justice of Singapore before entering private practice. During her time in practice, she received appointments as Law Clerk to assist the Competition Appeal Board in the first and subsequent appeals lodged against the Competition Commission of Singapore's Infringement Decisions relating to price fixing matters, and was also on the Supreme Court's Young Amicus Curiae scheme in 2010.

Swee Yen is the Co-Chair of the IPBA Dispute Resolution and Arbitration Committee, and an officer of the IBA Asia Pacific Regional Forum. She has been appointed as a member of the ICC Court, and was a former Vice-Chair of the IBA Arbitration Committee. She is also a Board member of the Swiss Arbitration Association, and a member of the LCIA Asia Pacific Users’ Council.

In addition to being on the Executive Committee of the Foundation for International Arbitration Advocacy, Swee Yen is the President of the Singapore branch of the International Law Association, and a member of the Governing Board for the Centre of International Law, NUS.  

Swee Yen is regarded as a global leader in litigation and international arbitration, the go-to lawyer for cross-border asset recovery, fraud and commercial disputes, enforcement and setting aside proceedings, and one of the best advocates in dispute resolution by various legal publications, including The Legal 500, Chambers Asia-Pacific, Chambers Global, Benchmark Litigation Asia-Pacific and Lexology Index. 

She was listed in GAR’s exclusive 45 under 45 list in 2023 and is a recognised Global Elite Thought Leader in Arbitration, Thought Leader in Commercial Litigation and Global Leader in Asset Recovery and Energy by the Lexology Index. She was also recognised as Asia's Litigators of the Year 2024 by Asian Legal Business (ALB) and awarded Litigation Lawyer of the Year at The Legal 500 Southeast Asia Awards 2023.

Described as the "go-to disputes lawyer in Singapore", "brilliant, decisive and fearless" with an "ability to zone right in on the issues with precision and confidence", she is “an absolute standout”, "a tenacious litigator" who “excels at the law, is a keen tactician, knows and guides the clients, and is a brilliant advocate” who is “razor-sharp” in her advocacy. She is known for “a particularly strong blend of legal skills, intelligence and business acumen and human perspective”. She is someone who “always bring her A-game to everything she does and someone you want in your corner in a life and death situation”.

Swee Yen was a member of the Civil Justice Commission whose work culminated in the promulgation of the new Rules of Court 2021 which seeks to effect transformative changes to the litigation process in Singapore.

She is appointed by the Ministry of Home Affairs as a member of the Public Entertainment Appeal Board, Criminal Law Advisory Committee (Hearing), Citizenship Committee of Inquiry and was also a member of the Gambling Regulatory Authority's Patron Dispute Committee. She is a Board member of the Singapore Land Authority.
 

Matters of significance in which Swee Yen has been involved in include the following:

  • Acting for investors against States in various investment treaty arbitrations and court proceedings, including acting for foreign investors in investment treaty claims arising from the misappropriation of gaming investments and securing a ground-breaking victory on the applicability of bilateral investment treaties based on state succession principles; acting against a State in an investment treaty arbitration for expropriation of diamond mining leases and in an application to set aside an investment treaty award finding the State liable for denial of justice in relation to its role in the shuttering of the Southern African Development Community Tribunal; acting against a State in investment treaty claims concerning the expropriation of a cement production enterprise serving China’s Belt and Road initiative; acting against a State for various arbitrary and unlawful actions taken after a change in government; and acting in cross-border asset recovery, enforcement and execution proceedings against States and State-owned entities.

  • Acting for States and State-owned entities in various investment treaty arbitrations and court proceedings involving injunctive relief, setting aside and enforcement of arbitral awards and judgments, including successfully defeating an ICSID claim brought against a State for expropriation of mining assets and acting for the State in court proceedings concerning the management of US$1.5 billion of assets; acting for a State against a telecommunications company in relation to a dispute over the imposition of taxes; acting for a State against a multinational automobile manufacturer in challenging a jurisdictional award in an investment treaty arbitration concerning claims in connection with certain tax incentives allegedly promised by the State; and acting for a State against a hedge fund in setting aside an investment treaty award concerning claims arising from corruption involving certain government officials.

  • Acting in various commodities, energy and infrastructure disputes, including in disputes involving floating production storage and offloading systems, offshore rigs and shipbuilding; for PRC investors in a dispute concerning a petroleum exploration and production project in Georgia; for a Thai coal-mining entity in relation to its US$450 million claim arising from the termination of a power plant project; for an affiliate of a leading Nigerian oil and gas conglomerate against a state-owned entity for breach of an international sales contract for crude oil; for a renewable energy company against an investment company over a US$350 million share purchase transaction; for an Uzbekistan oil and gas company in disputes concerning the termination of a communications project along a 2,000 km gas pipeline; and in asset-tracing and multi-jurisdictional claims involving Yukos Oil.

  • Acting in various transport-related disputes across aviation, maritime and land sectors, including defending a leading aircraft manufacturer against a PRC aviation company against claims arising out of the termination of an agreement granting exclusive licensing, production and sales rights; and acting for a leading logistics company in claims concerning alleged breaches of various investment agreements concerning entities across multiple jurisdictions including India, Japan and Hong Kong SAR.

  • Acting in various information technology, intellectual property, telecommunications and technology-related disputes across sectors involving digital currency, mobile telecommunications operators, digital payment service providers, systems integrators as well as content-service providers, and obtaining search orders and other injunctive reliefs.

  • Acting in various high-profile and significant commercial, corporate, minority oppression and joint venture disputes, involving private equity investments, public listed entities, multinational corporations, founders, family companies, family offices and high-net worth individuals; as well as in group representative actions and class-action equivalent claims.

Related Practices

  • Commercial & Corporate Disputes
  • Commodities & International Trade Disputes
  • International Arbitration
  • China
  • India
  • Vietnam

Swee Yen has various publications, in particular on civil procedure, enforcement of judgments and awards, international commercial and investment arbitration and litigation. Her publications include:

  • Preventing further bites of the cherry in challenging arbitral awards (SAL Practitioner) (2024)
  • Practical Insights on Fraud and Corruption in International Arbitration, 2024 (Wolters Kluwer)
  • Chambers’ Litigation 2024 Global Practice Guide – Singapore Chapter (Trends and Developments)
  • International Comparative Legal Guide – Investor-State Arbitration 2024 (Singapore Chapter)
  • The Proposed Reforms to the English Arbitration Act 1996: A Singapore Perspective’ Singapore Arbitration Journal (2023)
  • The Legal 500 Country Comparative Guide Singapore: Enforcement of Judgments in Civil and Commercial Matters (2023)
  • The Legal 500 Country Comparative Guide Singapore: International Arbitration (2023)
  • Global Arbitration Review (GAR) The Guide to Investment Treaty Protection and Enforcement; 2nd edition - Accessing Investment Treaty Protection: The Investor's Perspective (2023)
  • Provisional and Emergency Measures in International Arbitration (Edward Elgar Publishing) (2023)
  • The Investment Treaty Arbitration Review: Objections of Manifest Lack of Legal Merit of Claims: Arbitration Rule 41(5) Chapter (8th Edition) (The Law Reviews) (2023)
  • Singapore Rules of Court: A Practice Guide, 2023 Ed (Singapore Academy of Law Publishing) 
  • ICSID Rules and Regulations 2022: Article by Article Commentary (CH Beck)
  • Arbitration and Corruption: Duty or Right of Arbitrators to Report Suspicion of Corruption to Authorities, 2021 (Wolters Kluwer)
  • Getting the Deal Through: Investment Treaty Arbitration 2021 – Singapore Chapter (Lexology)
  • The Future of Investment Treaty Arbitration in the EU: Intra-EU BITs, the Energy Charter Treaty, and the Multilateral Investment - Arbitration, Public Policy and Enforcement after Achmea: A perspective from Singapore, Chapter 11, 2020 (Wolters Kluwer)
  • International Arbitration: In the Age of Technological Revolution, 2020 (Volume 1) (Lumen Juris)
  • International Arbitration Comparative Guide 2020 – Singapore Chapter (Mondaq)
  • Lye Lin Heng's Landlord and Tenant Law in Singapore, 2020 (2nd Edition) (LexisNexis)
  • The Legal 500 & The In-House Lawyer Hot Topic – Singapore: International Arbitration (4th Edition)
  • International Arbitration in the Energy Sector 2018: Energy Investor State Disputes in Asia (Oxford University Press)
  • European International Arbitration Review, 2017: The Incidence of Iura Novit Arbiter in Singapore Arbitration Law - Volume 6:1 (JurisNet, LLC)
  • The Use of Emergency Arbitrators in Investment Treaty Arbitration: ICSID Review - Foreign Investment Law Journal, 2016 (Oxford University Press)
  • Singapore Civil Procedure: Volume I, Chapter 29: Interlocutory Injunctions, Interim Preservation of Property, Interim Payments; Volume II: Arbitration Act and International Arbitration Act (Sweet & Maxwell)
  • Atkin's Court Forms (Singapore): Defamation (LexisNexis)
  • The Practice of Law, 2016 (LexisNexis)

Chambers Global & Asia Pacific

  • Dispute Resolution – Singapore – Arbitration: Band 3 (9 years ranked)
  • Dispute Resolution – Singapore – Litigation: Band 3 (8 years ranked)
  • Dispute Resolution – India: Expertise Based Abroad

"She is simply outstanding. The best of a new generation of savvy, fully internationalised disputes specialists."

"A strong team lead and a mastermind of strategy and execution."

"Swee Yen is a doyenne of the litigation world."

"I think that she is one of the best disputes partners in the world right now - she is a complete joy to work with."

"She is an excellent leader. She is decisive and outcome-focussed."

"Swee Yen is a powerhouse and a force of nature. She is very active in executing her work and building her network."

"Swee Yen is a top legal mind and is adept at handling the most complex matters before the Singapore courts."

"She is responsive, reliable and technically very good."

"She is a leader in the field in Singapore. I think she is one of the best advocates in Singapore and the region."

"A brilliant lawyer who is very meticulous in her approach. She knows the client's commercial requirements."

"Keen sense of strategy”, and “great ability to quickly grasp her clients' perspective and understand their commercial issues." 

The Legal 500

  • International Arbitration – Singapore: Leading Individual
  • Dispute Resolution – Singapore: Leading Individual
  • Litigation Lawyer of the Year for The Legal 500 Southeast Asia Awards 2023

"Swee Yen Koh SC is excellent all around. She excels at the law, is a keen tactician, knows and guides the clients, and is a brilliant advocate. What makes her special is that no matter how busy she is, she never lets one down - be it on matters or the simple organizing of a panel or a conference. She does it all, at highest quality and in good time."

“Koh Swee Yen SC has a particularly strong blend of legal skills, intelligence and business acumen, and human perspective.”

"Koh Swee Yen fights hard for her clients in the most difficult of cases and has a knack for finding persuasive points that aren’t apparent."

“Swee Yen Koh is an excellent advocate, one of the best in Singapore."

"Koh Swee Yen SC is an absolute standout – she’s clever, hardworking and tenacious."

“Brilliant, decisive and fearless.”

"She is the go-to disputes lawyer in Singapore, with an ability to zone right in on the issues with precision and confidence.”

Lexology Index

  • Global Elite Thought Leader – Arbitration 2025
  • Thought Leader – Commercial Litigation 2024
  • Global Leader – Asset Recovery and Energy, 2024;
  • National Leader (Southeast Asia) – Arbitration, 2025; Asset Recovery, Commercial Litigation and Energy, 2024
  • Listed in GAR's 45 under 45 List, 2023

Asian Legal Business (ALB)

  • Asia's Litigators of the Year 2024
  • Dispute Resolution Lawyer of the Year at the ALB SE Asia Law Awards 2024
  • Women Lawyer of the Year (Law Firm) at the ALB SE Asia Law Awards 2021

asialaw

  • Dispute Resolution – Singapore: Distinguished Practitioner

"Completely on top of her game."

"Extremely tenacious; never gives up and fights to the end for a client."

Benchmark Litigation

  • International Arbitration: Litigation Star
  • Top 100 Women in Litigation – Asia Pacific

"Very tenacious advocate."

Contact Details

Qualifications

National University of Singapore (LL.B., Hons.)

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