Private Enforcement & Follow-on Damages
Private Enforcement & Follow-on Damages


Vivien Terrien is a Judge’s Counselor (Référendaire) at the Court of Justice of the European Union and was part of the EU General Court President’s office for ten years. He also acts as Deputy Board Member of the Polynesian Competition Authority and as International Competition Network (ICN) representative for the Competition Council of Luxembourg. He is an Honorary Member of the European Lawyers’ Union.
Before joining the Court in 2009, Vivien practiced as an attorney in the antitrust teams of Linklaters in Paris and, then, of WilmerHale in Brussels. He qualified as a Paris and New York attorney-at-law after studying at Ottawa University (Canada) and graduating from the Universities of Paris II Panthéon-Assas and Nantes (France), the College of Europe (Bruges, Belgium) and Harvard Law School (Cambridge, USA).
Vivien is academically involved as a lecturer in EU internal market and competition law at the Paris II Panthéon-Assas University, the Lorraine University, the Catholic University of Paris and the University of Pau and the Adour Region. In addition, he regularly intervenes as a speaker on EU antitrust matters in international fora and before various national authorities. Moreover, he has organized and participated in several trainings and workshops for national judges, among them, those held in the framework of the Training for National Judges in EU Competition Law at the OECD-GVH Regional Centre for Competition in Budapest (Hungary) and at the Law School of the University of Valencia (Spain).
Vivien has published many articles on EU litigation, antitrust and institutional law topics. Most recently, he co-authored the reference book “European Court Procedure – A Practical Guide” (Hart Publishing, 2020 – https://europeancourtprocedure.eu) and he wrote entries in the French version of the Dictionary of Competition Law (Concurrences, 2023) He is also a team member of the Judicial Competition Law website (www.judicialcompetitiontraining.eu) and he sits as Board Member and Member of the Scientific Committee at the Research Institute advancing competition law and economics in small market and insular economies (ISLE).

Hanna Danwall is Head of Competition law at Carlsberg Group where she is heading up the department for competition, trade sanctions, personal data protection and stock exchange compliance. Prior to joining Carlsberg she was the Group Competition Compliance Officer at Maersk Group. She started her competition law career at Vinge in Brussels where she advised large multinationals on all aspects of EU competition law. She has LLM’s from Lund University and King’s College London.

Tiffany Rider has over 20 years of experience focusing on criminal antitrust cartel investigations; follow-on antitrust class action litigation and arbitration; and complex mergers and acquisitions. Regarded as a prominent antitrust advisor, Tiffany has been ranked by Chambers USA as an "Antitrust: Litigation Specialist" and is recognized in Legal 500 U.S. Tiffany has defended companies and individuals in consequential international cartel cases, advocating before the Department of Justice, European Commission, and Canadian Competition Bureau, among a number of other global enforcement agencies. She also has extensive experience in civil follow-on MDLs, civil litigation, and arbitration.
In her counseling and compliance practice, she designs and implements global competition compliance programs for clients in diverse industries, including technology, manufacturing, transportation, and financial services. Additionally, Tiffany has extensive experience representing clients on significant mergers and acquisitions, including before both the Department of Justice and the Federal Trade Commission.

Mathieu has over 20 years of experience in legal, policy advice and eDiscovery. He has worked with global corporations, law firms and international institutions across EMEA advising on many high profile and complex investigations and disputes as well as on legislation in areas such as corporate fraud, money laundering, competition law and international trade. Mathieu founded several of the first document review companies or departments in Europe and has built up a large global network of lawyers and project managers.”






- Review of developments in key jurisdictions
- Update on collective actions including implementation of European Collective Redress Directive
- Practical strategies for trial management
- Quantification of damages
- Litigation funding: how should it be encouraged?