John Hamill > DLA Piper LLP (US) > Chicago, United States > Lawyer Profile

DLA Piper LLP (US)
CHICAGO, IL 60606-0089
United States

Work Department

Litigation, Arbitration and Investigations; Telecom; Media, Sport and Entertainment; Healthcare


Partner; US Co-Chair, Business & Commercial Litigation


John Hamill is a preeminent first chair trial lawyer and commercial litigator, having steered clients through complex matters in multiple subjects that run the course in business litigation. His practice ranges across the full spectrum of complex commercial litigation, and he has led teams in trial courts, arbitrations, and appellate courts nationwide. Subject matters have included antitrust and competition law, RICO, healthcare, insurance, telecommunications, sports and media, First Amendment, failed deals, pharmaceutical, energy, professional responsibility, and all types of business-to-business disputes. He regularly counsels clients in antitrust and unfair competition matters. He is deeply committed to pro bono work and has tried multiple civil rights cases for pro bono clients.


Chicago Inn of Court; Abraham Lincoln Association; Supreme Court Historical Society


J.D., Harvard Law School; B.A., University of Notre Dame

Lawyer Rankings

United States > Dispute resolution > General commercial disputes

The ‘creative problem-solvers‘ at DLA Piper LLP (US) are well-positioned across the US and active in a variety of disputes. The team cover class actions, privacy litigation involving new technologies, breach of contract and business disputes, and also act at the interface to antitrust, product liability and white-collar crime, among others. It was recently also involved in significant proceedings resulting from the COVID-19 pandemic. Angela Agrusa is an experienced defense lawyer in Los Angeles and leads the practice together with the Chicago-based John Hamill. Christopher Young in San Diego is ‘great to work with and very reliable.’

United States > Antitrust > Civil litigation/class actions: defense

DLA Piper LLP (US) is praised for the ‘incredible depth of its worldwide practice’ and ‘the ability to pool resources from a wide range of attorneys’. Lisa Tenorio-Kutzkey leads the practice from San Francisco with strong capabilities in bet-the-company litigation and multi-jurisdictional cases. David Bamberger, described as a ‘dogged advocate, a brilliant tactician, and a very thoughtful lawyer’, is located in Washington DC and focuses on a wide range of litigation matters relating to antitrust and trade regulation, including class actions. Other names to note in the firms Chicago office are business and antitrust litigators John Hamill and Robby Robertson. Former co-chair of the group Lesli Esposito left the firm in February 2021.