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International Arbitration Forum

Klaus Sachs

Leading arbitrator Public record 22 published cases

Klaus Sachs

Arbitrator in 22 published cases (presiding or sole arbitrator in 13) before ICSID, SCC, PCA tribunals, in fuel import and trading; administrative penalties, oil; licensing rounds, gold mining (buriticá mine); illegal mining and security disputes.

German ICSID, SCC, PCA Fuel import and trading; administrative penalties, Oil; licensing rounds, Gold mining (Buriticá Mine); illegal mining and security, Portfolio investment; listed shares; Samsung merger

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Overview

In the published awards, Klaus Sachs has been appointed by claimants 2 times and by respondents 2 times, and has presided or sat alone in 13 cases. Of the party appointments, 2 came from States and 2 from investors or companies.

Outcome for the appointing side, where the published decision is clear: claimant prevailed in 25% of the 2 claimant appointments; respondent prevailed in 100% of the 1 respondent appointments. Mixed outcomes count as half.

Appointed most often by: Georgia (1), Poland (1), AES Corporation (1), Tau Power B.V. (1), SUNRESERVE LUXCO HOLDINGS S.À.R.L. (1).

22Published cases
13As chair or sole arbitrator
4Party appointments
0Dissents recorded

Track record

YearCaseRoleAppointed byInstitution / rulesSectorAward
2026 Continental Gold Inc. v. Republic of Colombia President — ICSID · Washington, DC Gold mining (Buriticá Mine); illegal mining and security Read award →
2025 Korea National Oil Corporation, KNOC Nigerian West Oil Company Limited, and KNOC Nigerian East Oil Company Limited v. Federal Republic of Nigeria Co-arbitrator — ICSID · Washington DC Oil; licensing rounds Read award →
2025 Mercuria Energy Group Limited v. Republic of Poland President Parties jointly SCC · Stockholm Fuel import and trading; administrative penalties Read award →
2025 Franco-Nevada Corporation v. Republic of Panama Co-arbitrator — ICSID · Washington, D.C. — Read award →
2025 Mason Capital L.P. and Mason Management LLC v. Republic of Korea President Parties jointly PCA · Singapore Portfolio investment; listed shares; Samsung merger Read award →
2025 CEF Energia BV v. Italian Republic President — — — Read award →
2024 AsiaPhos Limited and Norwest Chemicals Pte Ltd v. People’s Republic of China President Co-arbitrators — — Read award →
2024 Angel Samuel Seda and others v. Republic of Colombia President — — — Read award →
2024 Groupe Pizzorno Environnement v. Kingdom of Morocco President — — — Read award →
2023 TECO Guatemala Holdings, LLC v. Republic of Guatemala Committee member — — — Read award →
2022 Tethyan Copper Company Pty Limited v. Islamic Republic of Pakistan President Parties jointly — — Read award →
2022 Mason Capital L.P. (U.S.A.) 2. Mason Management LLC (U.S.A.) v. Republic of Korea President — — — Read award →
2022 Saint-Gobain Performance Plastics Europe v. Bolivarian Republic of Venezuela President Parties jointly — — Read award →
2021 Bob Meijer v. Georgia (Challenged by the claimant; proposal to disqualify decided by the Chairman of the Administrative Council (David Malpass)) Co-arbitrator Respondent — — Read award →
2020 Orascom TMT Investments S.à r.l. v. People's Democratic Republic of Algeria Committee member Appointing authority — — Read award →
2020 Sun Reserve Luxco Holdings SRL v. Italy Co-arbitrator Claimant — — Read award →
2018 Suez, Sociedad General de Aguas de Barcelona, S.A.and Vivendi Universal, S.A. v. Argentine Republic (formerly Aguas Argentinas, S.A., Suez, Sociedad General de Aguas de Barcelona, S.A.and Vivendi Universal, S.A. v. Argentine Republic) Committee president — — — Read award →
2014 Vigotop Limited v. Hungary President Parties jointly — — Read award →
2014 Enkev Beheer B.V. v. Republic of Poland Co-arbitrator Respondent — — Read award →
2013 AES Corporation and Tau Power B.V. v. Republic of Kazakhstan Co-arbitrator Claimant — — Read award →
2011 National Grid plc v. The Argentine Republic (Chairman of the LCIA Division deciding the challenge to Mr Kessler) LCIA Division (challenge decision) Appointing authority — — Read award →
2005 Wena Hotels Ltd. v. Arab Republic of Egypt President Co-arbitrators — — Read award →

Expertise

The legal issues and sectors decided most often in the published awards. Each links to the cases in the database.

document production 3set-aside 2Redfern schedule 2IBA Rules on the Taking of Evidence 2bifurcation 2tribunal assistant 2transparency 2confidential business information 2intra-EU objection 1Energy Charter Treaty 1Komstroy 1Achmea 1PL Holdings 1effective means 1fair and equitable treatment 1fork-in-the-road 1annulment 1enforcement 1New York Convention Article V(1)(e) 1FSIA arbitration exception 1comity 1Pemex 1TermoRio 1Article 1 Protocol 1 ECHR 1

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Appointing counsel

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Compiled with AI from the published awards and decisions in the Forum’s database. It covers public cases only, counts each case once, and may contain matching errors; every row links to its source. Corrections: info@arbitration.org. All arbitrators →