Pia Hesse
Pia Hesse, LL.M.
Associate, Competition and EU State Aid Law, International Trade Law

Pia Hesse specialises in German and European antitrust and competition law as well as in EU state aid and international trade law. She advises German and international clients in proceedings before the German and European courts, the European Commission and the Bundeskartellamt.

Languages: German, English, Spanish, French


  • Representing Vodafone before the courts in relation to a successful third-party intervention against a Bundeskartellamt decision clearing a joint venture between Deutsche Telekom and EWE subject to remedies

  • Antitrust law advice to and representation of EDEKA in several ongoing follow-on damages proceedings

  • Advising the Monitoring Trustee in various European Commission remedy cases (inter alia, case M.9564 – LSEG/Refinitiv)

  • Advising Qell Acquisition Corp. (SPAC) on EU state aid law and FDI aspects in relation to its multi-billion merger with Lilium

  • Advising leading Chinese locomotive manufacturer CRRC on the merger control aspects of its acquisition of Vossloh Locomotives (complex phase II proceedings before the Bundeskartellamt)

  • Antitrust law advice to a Scandinavian healthtech company regarding a competition complaint

  • Advising and representing a leading media company vis-à-vis the European Commission


Pia studied law at the University of Cologne and the Université d‘Auvergne with a focus on Public International and European Law and obtained an LL.M. from the University of Glasgow. She completed her legal traineeship (“Referendariat”) at the Higher Regional Court of Berlin, during which she also worked for the Legal Service of the European Commission. Her doctoral thesis deals with extraterritorial law enforcement measures in Public International Law (ongoing Ph.D. project).


  • Extraterritorial Law Enforcement in Areas of Limited Statehood: The Transnational Dimension of The Rule of Law, in: Hamid/Wouters (eds.), Rule of Law and Areas of Limited Statehood: Domestic and International Dimensions, 2021, p. 184-205

  • UN Security Council Resolutions as a Legal Framework for Multinational Military Operations, in: Geiß/Krieger (eds.), The 'Legal Pluriverse' Surrounding Multinational Military Operations, 2020, p. 267-286

  • Comment: Neither Sunken Vessel nor Blooming Flower! The Lotus Principle and International Humanitarian Law, in: Baade/Mührel/Petrov (eds.), International Humanitarian Law in Areas of Limited Statehood, 2018, p. 80-85