Tatiana Siakka

Tatiana Siakka

United Kingdom, London
Senior Associate at Squire Patton Boggs
Profession: Attorney / Solicitor, Lawyer
Industry: Competition, Law Practice


Tatiana is a competition law specialist with wide-ranging experience in both contentious and non-contentious matters. She advises clients on all aspects of EU and UK competition law including state aid and has successfully represented clients before the European Commission and the UK Competition and Markets Authority (CMA). In addition, Tatiana has extensive experience in competition litigation in the EU and UK courts, including the High Court, Competition Appeal Tribunal and Court of Appeal, having acted in proceedings for both claimants and defendants.


English, Greek, French


EU LawAntitrustMerger ControlState AidLitigation


Squire Patton Boggs

Senior Associate at Squire Patton Boggs

November 2018 - Present • London, United Kingdom



Leiden University

LL.M. in EU Law

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