Ioannis Kokkoris

Queen Mary University (London), London University

Dr. Ioannis Kokkoris is a Professor at Queen Mary University London. He previously was a Reader at the University of Reading. He teaches competition law and company law. Prior to that he was a Principal Case Officer/Economic Advisor at the Office of Fair Trading, UK where he dealt with leading cases such as NASDAQ/LSE, NYSE/Euronext, Global/GCap and he was a member of the drafting team of the UK Merger Guidelines. He has worked at the DG Competition European Commission, as well as the US Federal Trade Commission. His background combines both law and economics. He holds a BA in Economics (Essex, UK) and an MPhil in Economics (Cambridge, UK), as well as an LLM (Warwick, UK) and a PhD in Competition Law (King’s College London, UK) and has conducted research at Harvard Law School. He has authored/co-authored/edited 12 books and has written over 40 articles in leading journals. His most recent books include Antitrust Law Amidst Financial Crisis (Cambridge University Press),Competition Law and the Enforcement of Article 102 (editor, Oxford University Press). He is in the process of co-authoring a book on remedies in competition law (Hart) and is the genera editor of a cross-jurisdictional comparative book by Sweet and Maxwell (Competition Cases from the European Union). He is the Legal Expert in a research project for the European Commission on unilateral conduct legislation across the EU. He is also an International Consultant on Competition Policy for the Organisation for Security and Cooperation in Europe, currently working on training in competition law in Armenia and other countries.

Linked author

Karatzas & Partners Law Firm (Athens)


2288 Bulletin

Ioannis Kokkoris, Lydia Gavriilidou Mergers and online platforms: An overview of EU and national case law


The European Commission has dealt with various concentrations in the field of online platforms in recent years and has thus developed a policy, which is reflected in its decisions as this article will show. One of the main issues in concentrations in online platforms remains unsolved; it is very likely that the jurisdictional limits/thresholds of the European Union EUMR (EUMR) are not met, since the turnover of some of the companies involved in a transaction, is not considerable enough for a relevant concentration to be assessed under the EUMR. The turnover in these markets is not always the most suitable indicator of market power. As a result, a gap has been created in light of the new digital era, where there is a trend of consolidation in online platforms with a minority of such transactions though being notifiable, and this trend enhances the parties’ market power through the access to large volumes of data.

Ioannis Kokkoris Merger Remedies: An overview of EU and national case law


When a concentration has a significant negative effect on effective competition in the market, parties may propose remedies (or in some jurisdictions remedies can be imposed by National Competition Authorities – NCAs) to eliminate these effects and thus to get clearance. Remedies is an (...)

8340 Review

Ioannis Kokkoris Was there a gap in the ECMR?


This paper aims to address the change in the legal standard of merger assessment due to the reform in the ECMR that occurred in 2004. As regards the substantive reforms, the substantive test was changed from the dominance test to the significant impediment to effective competition test. This (...)

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