October 5, 2026
Willkie was named the winner for "Antitrust/Competition Impact Case of the Year" at the Benchmark Litigation Europe Awards 2026, recognizing the leading dispute resolution practices in Europe.
Willkie's litigation team in London was recognized for Merricks v. Mastercard, a lawsuit on behalf of approximately 46 million consumers that was the first collective action to be certified in the United Kingdom. The team represented Walter Merricks CBE in the landmark collective action seeking billions in damages against Mastercard on behalf of UK consumers who allegedly paid higher prices due to Mastercard’s unlawful interchange fees. Willkie secured a settlement at the UK Competition Appeal Tribunal in May 2025, in litigation that ran for nearly a decade and created numerous groundbreaking and precedent-setting rulings.
The Willkie team was led by partner and Global Chair of the Competition & Antitrust Litigation Practice Boris Bronfentrinker and partner Michelle Clark, along with associates Oliwia Siutkowska, Ronan Chisholm, and Cameron Wright.
Additionally, Willkie was shortlisted in three categories:
- "Antitrust & Competition Firm of the Year"
- "Class Actions - Claimant Firm of the Year"
- "Competition Litigator of the Year," London partner Boris Bronfentrinker
View the honorees of the Benchmark Litigation Europe Awards 2026 here (subscription required).
