Mathew Heim

Tanfield Chambers (London)
Lawyer (Senior Regulatory Policy Counsel)

Mathew Heim advises on political, policy or communications challenges in complex legal matters. Mathew is closely involved in the activities of the OECD Competition Committee and the International Competition Network. He is also a Visiting Fellow at Bruegel focusing on Competition Policy and a Senior Regulatory Policy Counsel at Tanfield Chambers. He has degrees from both the universities of Bristol and Exeter before being called to the Bar of England and Wales.

Linked authors

Freshfields Bruckhaus Deringer (Paris)
University Paris II Panthéon‑Assas
General Court of the European Union (Luxembourg)
MAPP (Paris)
French State Council (Paris)
ESSEC Business School (Cergy)
Compass Lexecon (Brussels)
Van Bael & Bellis (Brussels)


1129 Bulletin

Mathew Heim Extraterritoriality: The effect of remedies on the international antitrust system


The doctrine of “exterritoriality” in competition law is generally understood to define the scope of government authorities or courts to apply their competition laws on legal persons based in another jurisdiction. Such extraterritorial jurisdiction is generally only invoked where it can be shown that there are “direct, substantial, and foreseeable” anticompetitive effects, in what is known as the “qualified effects test.” This doctrine, which finds its roots in the U.S. 1945 Alcoa case, is now largely replicated across most competition jurisdictions in one form or another.

4229 Review

Frédéric Jenny, Damien Neven, Jacques Buhart, David Henry, Thomas Funke, Mathew Heim, Catarina Midões, Nicholas Levy, David R. Little, Henry Mostyn, Ioannis Lianos, Massimo Motta, Martin Peitz, Cristoforo Osti, Almos Papp, Christian Wik, Kristian Hugmark, Julia Vahvaselkä, Antoine Winckler, Thierry Boillot Which competition and industrial policies for the new EU Commission after Siemens/Alstom?


This series of articles presents different points of view about the priorities of the newly established Commission on competition policy in Europe in the aftermath of the decision prohibiting the Siemens/Alstom merger and of the manifesto published by French and German governments. These (...)

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