Dimitrios Katsifis


Dimitrios is a Senior Associate at Geradin Partners. Prior to that, Dimitrios worked in Greece as a trainee lawyer in the in-house legal team of leading betting company OPAP S.A., where he worked on regulatory and litigation matters, cooperating closely with the Group’s Compliance and Regulatory Affairs Officer.

Dimitrios practices in the area of EU competition law with a focus on complex Article 102 TFEU cases, particularly on issues related to online advertising, digital platforms and the interface between IP and competition law. He also has experience in payment systems, IT contracts and games of chance market regulation.


  • NewsCorp over a variety of competition law issues
  • DMG Media over a variety of competition law issues
  • European Publishers Council regarding a variety of competition law and regulatory matters
  • Huawei in relation to competition law issues
  • O2 in relation to the EC’s investigation over network sharing agreements in the Czech Republic


LL.M. (Hons), University of Cambridge, Christ’s College (Hellenic Petroleum scholarship, de Hart prize in Law, honorary graduate scholarship) (2018)

LL.B. (Hons), National and Kapodistrian University of Athens (State Scholarship Foundation scholarship) (2016)


  • Athens (2019)
  • Brussels (2020)


Greek, English, German

Publications and speaking engagements

  • Damien Geradin & Dimitrios Katsifis (2019) An EU competition law analysis of online display advertising in the programmatic age, European Competition Journal, 15:1, 55-96, DOI: 10.1080/17441056.2019.1574440.
  • Damien Geradin, Dimitrios Katsifis, Google’s (forgotten) monopoly – Ad technology services on the open web, September 2019, Concurrences Review N° 3-2019, Art. N° 90967.
  • Damien Geradin & Dimitrios Katsifis (2020) “Trust me, I’m fair”: analysing Google’s latest practices in ad tech from the perspective of EU competition law, European Competition Journal, DOI: 10.1080/17441056.2019.1706413.