White & Case (Brussels)

Martina Castrén

White & Case (Brussels)

Martina Castrén is an associate at White & Case, based in the firm’s Brussels office. She is a member of White & Case’s EU law practice in Brussels and advises clients on all aspects of European and Finnish competition law. Martina Castrén has represented clients before the European Commission in a number of merger control reviews, including complex investigations requiring divestitures. She regularly coordinates global and Nordic merger filings. She has also represented clients in cartel proceedings before the European Commission and regularly advises clients on the application of the abuse of dominance rules, especially in the technology sector. Prior to joining White & Case in 2019, Martina Castrén worked for the Finnish Competition and Consumer Authority, where her work as a senior advisor covered antitrust investigations and merger control in a broad range of industries, including financial services, construction, daily consumer goods retail and agriculture. In addition to the public enforcement of competition law, Martina Castrén has in-depth experience in legislative work as a member of working groups preparing the reform of the Finnish competition rules and the national health care system. She holds a Master of Laws degree from Harvard Law School and the University of Helsinki, where she is pursuing a doctorate. Martina Castrén regularly publishes in the field of competition law and policy.

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863 Bulletin

Martina Castrén, Marika Harjula The Finnish Competition Authority identifies competition concerns in a proposed merger in the telecommunications network design, construction, and maintenance market, leading to the abandonment of the deal by the parties (Enersense / Voimatel)


Prohibition decisions and withdrawals of deals have traditionally been rare in Finnish merger control, as the Finnish Competition and Consumer Authority (“FCCA”) and merging parties usually find remedial solutions in cases raising competition concerns. However, in 2020 the Market Court (...)

Strati Sakellariou-Witt, Axel Schulz, Katarzyna Czapracka, Tilman Kuhn, Martina Castrén The EU General Court dismisses a €1.7B claim for damages brought by a courier delivery services company in which it sought compensation for losses resulting from the Commission’s decision to block a merger with its rival (UPS / TNT)


On 23 February 2022, the EU’s General Court (GC) dismissed a €1.7 billion claim for damages brought by United Parcel Service Inc. (UPS) against the European Commission (EC). UPS sought compensation for the losses resulting from the EC’s decision to block UPS’ merger with TNT NV (TNT). The GC, (...)

Martina Castrén The Finnish Competition Authority secures its second merger block in 2020 as a €360 million healthcare deal is abandoned during the Market Court proceeding (Mehiläinen / Pihlajalinna)


An exceptional year in Finnish merger control came to an end on 29 December 2020 when the Finnish Market Court announced its decision concerning the Finnish Competition Authority’s (the FCCA) proposal to prohibit the merger between healthcare firms Mehiläinen and Pihlajalinna. After the oral (...)


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