OVERVIEW

Expertise

Stella is an experienced competition litigator who advises on EU and UK competition law and represents clients in damages claims both in relation to abuse of dominance and cartels. She has acted in cases before the High Court, Competition Appeal Tribunal, Court of Appeal, Supreme Court, and at European level, the General Court and Court of Justice. Stella also has extensive expertise in collective actions in the UK. Stella is dual-qualified in England and Greece and combines in-depth knowledge of European and English law and procedure with practical experience in securing the best outcomes for her clients.

Previously, Stella worked as legal assistant to Judge Dimitrios Gratsias at the General Court of the European Union in Luxembourg. She has also worked for a Belgian law firm specialising in finance, corporate and commercial law and prior to that, in Athens focusing on commercial matters.

Clients

Since joining Hausfeld in October 2011, Stella has acted for claimants across a wide range of sectors and industries – including SMEs, household names, and market-leading companies – in some of the most high-profile damages claims, including Air Cargo, PU Foam, Carbon & Graphite Products, FX, Occupant Safety Systems and Google Shopping, as well as the FX collective proceedings brought by Mr Evans and the collective action brough by Nikki Stopford against Google for abuse of dominance in search.

EDUCATION

Qualified Lawyers Transfer Scheme (QLTS), BPP University, London
Postgraduate studies in European and Competition Law, University of Leiden, the Netherlands
LLB., National Kapodistrian University of Athens, Greece
Erasmus Programme, University of Groningen, the Netherlands

BAR ADMISSIONS

Solicitor, England and Wales, 2015
Athens Bar Association, Greece, 2012

WHAT OTHERS SAY

Legal 500 UK

Stella Gartagani has been recognised as a key lawyer for her expertise in Competition litigation by Legal 500, 2025.

Experience

Antitrust/Competition

Stella played a key role in the legal teams representing or advising ground-breaking litigation:

Consumer champion and certified class representative Nikki Stopford in the £7 billion Google Search claim which is challenging Google’s agreements to preserve default status in mobile search. This alleged exclusionary behaviour results in shutting out competition and raised prices for UK consumers across the economy.
Philip Evans in FX Claim UK bringing a collective action against 8 global banks who manipulated the FX market.
Foundem in its claim before the High Court against Google for abuse of its dominant position in respect of its conduct in comparison shopping.
Automotive manufacturers in their follow-on damages claims relating to the car glass and other Auto-Part cartels.
Claimants in relation to the Paraffin Wax, Methionine and the Feed Phosphates cartels.
Deutsche Bahn, together with a number of other European public transport companies in connection with the Carbon Graphite damages claim.