Skip to content
Sub practice
Sub practice

Competition and Antitrust Litigation

Allen & Overy’s highly experienced competition and antitrust team combines litigation and trial expertise with strategic advice to allow clients to pursue or defend claims successfully before regulators and courts in Europe, the U.S. and around the globe.

A&O’s global team of antitrust enforcement experts includes former U.S. prosecutors (including in the United States Federal Trade Commission), judicial law clerks from the U.S. courts, judicial assistants at the European Court of Justice and law professors, alongside highly experienced lawyers and litigators. Our team represents clients in the highest profile matters globally, including Cartel, monopolization, and abuse of dominance, and is expert in the key procedural issues including class certification, pretrial procedures, and trying cases.

We advise clients across a range of sectors, including financial services, media and technology, consumer and retail, on:

  • the fallout from adverse decisions by and results from European, U.S. and national competition authorities concerning breaches of competition law, including appeals of infringement decisions
  • multijurisdictional litigation strategies and coordination, including pre-litigation 
  • the themes and factual development necessary to win any liability claim
  • the complex procedural mechanisms in U.S, class actions and private actions for damages, including class certification and damages analysis, 
  • trial of antitrust competition law claims
  • appeals and judicial reviews, including reviews of decisions by regulatory authorities

News and insights

pharmacist lifting medication from a shelf

Blog Post: 23 October 2023

European Commission sanctions first ever pharmaceuticals cartel and scores victory in pay-for-delay appeal

The European Commission (EC) has fined five pharmaceutical companies a total of EUR13.4 million for participating in a cartel concerning N-Butylbromide Scopolamine/Hyoscine (SNBB) – an active…

Read more

Publications: 20 March 2023

Abuse of dominance enforcement paves path for digital reform

2022 saw a significant decrease in fines across the world for abuse of dominance cases. Authorities continued to focus on ‘Big Tech’, but were more willing to accept commitments from firms in place of…

Read more
Investigations Insight Ariel view gold New York

Blog Post: 26 May 2022

Criminal antitrust intent: recent developments frustrate the U.S. DOJ Antitrust Division's ability to secure convictions at trial

An important development in the articulation of criminal antitrust intent has, in many ways, evolved to frustrate the U.S. Department of Justice (DOJ) Antitrust Division’s ability to secure…

Read more
Investigations Insight Ariel view Dome Washington

Blog Post: 27 April 2022

U.S. Department of Justice Antitrust Division updates its Leniency Program

The U.S. Department of Justice (DOJ) recently revised its Antitrust Division Leniency Policy and Procedures and has published updated guidance in the form of FAQs. 

Read more