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Karolien Van der Putten


Karolien advises clients on all aspects of EU and Belgian competition law, including cartels, abuse of dominance, merger control, and state aid.
Karolien has assisted clients in cartel investigations conducted by the European Commission and the Belgian Competition Authority. She has also advised clients on merger notifications, and assisted government institutions and companies in complying with state aid rules. Furthermore, Karolien has experience in representing clients before the Court of Justice of the European Union.


Representative matters

A pulp and paper manufacturing company in an antitrust investigation by the European Commission. (previous firm experience).

A healthcare provider in several antitrust and abuse of dominance investigations by the Belgian Competition Authority. (previous firm experience).

Several multinationals in State aid investigations by the European Commission and litigation before the European Court of Justice. (previous firm experience).

A private equity firm with more than $50 billion of assets under management on several of its investments and sales of portfolio companies. (previous firm experience).




Published Work

  • Contributor to VAN DER WOUDE M., JONES C. (2021, 2022, 2023) “EU Competition Law Handbook”, London: Sweet & Maxwell
  • VIAENE H., VAN DER PUTTEN K. (2021) “The EU General Court upholds a decision from the Commission sanctioning a telecommunications operator for gun jumping and clarifies in its decision the applicable rules (Altice / PT Portugal)”, e-Competitions September 2021, Art. N° 103019
  • VIAENE H., VAN DER PUTTEN K., WIAME H. (2022) “Global Legal Insights: Cartels 2022 – Belgium”, London: Global Legal Group
  • VIAENE H., VAN DER PUTTEN K., WIAME H. (2022) “Global Legal Insights: Merger Control 2022 – Belgium”, London: Global Legal Group



LL.M., Competition Law, King’s College London, 2019

Master of Laws, Ghent University, 2018

Bachelor of Laws, Ghent University, 2016

A&O Shearman was formed on May 1, 2024 by the combination of Shearman & Sterling LLP and Allen & Overy LLP and their respective affiliates (the legacy firms). Any matters referred to above may include matters undertaken by one or more of the legacy firms rather than A&O Shearman.