Tiemen represents clients in complex and high-stakes disputes, often with a cross-border element. He has broad experience acting for private equity, corporate and banking clients in (post-)M&A disputes and other corporate and commercial disputes, both before the Dutch courts as well as in arbitration. Tiemen was previously seconded to Shell's Global Litigation group and has particular expertise in the energy sector.
Representing two listed corporate clients in civil follow-on litigation before the The Hague District Court and Court of Appeal flowing from alleged breaches of foreign antitrust laws.
Representing the offeror (an entity owned by funds managed by Blackstone) in Enterprise Chamber litigation brought by minority shareholders following the successful public offer for NIBC Bank.
Representing two global private equity firms in NAI arbitration relating to a post-M&A SPA dispute in the energy sector.
Representing Shell plc before the The Hague Court of Appeal in the climate change case brought by several NGOs.
Representing an international investment bank in a multi-jurisdictional case concerning an issuance of bonds and duty of care.
Representing several international energy companies in ICC arbitration relating to a post-transaction SPA dispute pertaining to the sale of an oil mining lease.
Representing Lucerne Capital Management in Enterprise Chamber litigation challenging the public offer for Altice Europe N.V., resulting in an increase of the offer price of more than 30%.
Representing the majority shareholder and offeror in relation to a public offer for a foreign dual-listed Dutch company in inquiry proceedings before the Enterprise Chamber against a minority shareholder.
Representing a global power company in NAI arbitration relating to the interpretation of certain long-term electricity sales agreements.
Representing an international investment bank in Supreme Court tax litigation on issues of Dutch tax law.
Representing various clients in their defense against allegations of greenwashing before the Dutch Advertising Standards Board (Reclame Code Commissie) and its appeals body.
Author of case note published in JOR 2025/48 in March 2025 - Gerechtshof Den Haag – ECLI:NL:GHDHA:2024:1163
Author of article "Shareholder activism and ESG: from locust to green knight?" ('Aandeelhoudersactivisme en ESG: van sprinkhaan naar groene ridder?'), published in Maandblad voor Ondernemingsrecht, July 2024
Author of case note published in JOR 2024/105 in May 2024 - Gemeenschappelijk Hof van Justitie van Aruba, Curaçao, Sint Maarten en van Bonaire, Sint Eustatius en Saba – ECLI:NL:OGHACMB:2023:252
Author of case note published in JOR 2023/206 in September 2023 - Gerechtshof Amsterdam – ECLI:NL:GHAMS:2023:983
University of Amsterdam (LL.M. International and European Tax Law) 2015
Joined Clifford Chance, Amsterdam 2015
Admitted as an advocaat to the Dutch Bar in 2015
Professional
bodies
Member of the Dutch Association of Corporate Litigation
Member of the Dutch Arbitration Association
Awards and citations
Leading Associate in Dispute Resolution: Arbitration The Legal 500 EMEA 2025
"Tiemen Drenth communicates in a pleasant and straightforward way and takes feedback on board in a positive manner. He has strong interpersonal skills, which makes it a pleasure to work with him" Legal 500 2024
Very knowledgeable, can grasp a matter quickly, very friendly, organised and communicative.’ Legal 500 2023
Tiemen Drenth goes beyond what you would expect from someone with his level of experience by having a very broad knowledge of markets, players, economics and politics. That gives him good business acumen combined with strong legal advice.’ Legal 500 2023
Clifford Chance
