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John Hamill

John Hamill

Partner
Chair, US Business & Commercial Litigation
About

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, ERISA, 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. His work has been recognized by Chambers USA, Chambers Global, Legal 500, and the National Law Journal.

Bar admissionsIllinois
CourtsSupreme Court of the United StatesUnited States Court of Appeals for the Third CircuitUnited States Court of Appeals for the Fourth CircuitUnited States Court of Appeals for the Fifth CircuitUnited States Court of Appeals for the Sixth CircuitUnited States Court of Appeals for the Seventh CircuitUnited States Court of Appeals for the Ninth CircuitUnited States Court of Appeals for the Tenth CircuitUnited States Court of Appeals for the Eleventh CircuitUnited States Court of Appeals for the District of Columbia CircuitUnited States Court of Appeals for the Federal CircuitUnited States District Court for the Northern District of IllinoisUnited States District Court for the Western District of WisconsinUnited States District Court for the Western District of MichiganUnited States District Court for the Eastern District of ArkansasSupreme Court of IllinoisUnited States District Court for the Eastern District of TexasUnited States District Court for the Northern District of TexasUnited States District Court for the Southern District of Texas

EXPERIENCE

John J. Hamill has been lead counsel in a wide range of complex commercial litigation matters in numerous venues, including in areas such as antitrust, healthcare, insurance, sports, telecommunications, professional responsibility, energy, and numerous types of general business-to-business litigation, including class actions. These include cases tried to judgment, appealed, class actions, and many resolved favorably by settlement. Some sample engagements include:

Examples of engagements where he has lead litigation teams include:

  • Represented sophisticated client in defense of ERISA matter brought by Secretary of Labor
  • Represented a leading health insurance company in dozens of significant disputes involving payment disputes, indemnity issues, ERISA, and class claims
  • Represented property and casualty insurer in federal antitrust action concerning bail bond rates
  • Represented Major League Soccer team in bench trial dispute over stadium construction
  • Represented gaming organization in dispute over state tax legislation in Pennsylvania Supreme Court
  • Represented investor of gaming organization in First Amendment challenge to campaign contribution ban in Third Circuit
  • Represented a leading health insurance organization in a federal antitrust action under the Sherman Act
  • Representing a university in litigation concerning concussion injuries in sports
  • Represented a professional sports team in an ownership controversy
  • Represented pharmacy company in antitrust action related to alleged pay for delay scheme
  • Represented a professional sports team in various business litigation matters
  • Represented a prominent power utility in multiple class actions, appeals, and regulatory matters in state and federal courts and Supreme Court of Illinois
  • Represented a major energy company in a significant tax dispute
  • Represented a hospital system in an antitrust dispute
  • Represented a long distance carrier in RICO litigation
  • Represented a prominent power utility in unfair competition class actions
  • Represented several leading health insurance companies in a complex arbitration with a transportation company
Education
  • J.D., Harvard Law School

    cum laude

  • B.A., University of Notre Dame

    summa cum laude

Awards

  • Chambers USA
    •  Band 3, Illinois Litigation: General Commercial (2022)
  • The Legal 500 United States
    •  Recommended, Civil Litigation/Class Actions: Defense (2019-2022) 
  • Plaintiff's Lawyer Trailblazer, National Law Journal (2021)
  • Irish Legal 100
  • Law Bulletin Publishing Company, one of "40 Illinois Attorneys Under Forty to Watch" (2007)
  • Leading Lawyers Network
    • Commercial Litigation (2004-2014)
    • Federal Regulatory Law (2004-2014)
    • Telecommunications Law (2004-2014)
  • The Best Lawyers in America, Communications Law (2006-2021)
  • AV Peer Review Rated, Martindale-Hubbell's highest peer recognition for ethical standards and legal ability
  • Fellow, American Bar Foundation

Bylines

  • "Ticketing lawsuits point to further turmoil," SportsBusiness Journal, 2017
  • Editor, "RICO" chapter in the 2016 (Fourth) edition of Business and Commercial Litigation in Federal Courts by Thompson & Reuters
  • "RICO: A Guide to Civil RICO Litigation in Federal Courts," Jenner & Block Practice series, 2014
  • "Antitrust & PPACA," presented to the Chicago Bar Association Antitrust Committee, 2014
  • "Health Care Antitrust Cases and Strategies for Lawyers," Understanding Antitrust Issues in Healthcare (Inside the Minds): Aspatore 2010

Seminars

  • Panelist, "Sports & Entertainment Law Panel with DLA Piper," Harvard Law School, April 10, 2018
  • "Antitrust and PPACA," Chicago Bar Association Antitrust Committee, January 2014

Media Mentions

Clerk Experience

  • Adjunct clerk, the Honorable James Moran, US District Court, Northern District of Illinois 1994 – 1994

Memberships And Affiliations

  • Supreme Court Historical Society
  • American Bar Association – Antitrust Section
  • Seventh Circuit Bar Association – Former Member, Board of Governors
  • Fifth Circuit Bar Association
  • Chicago Inn of Court
  • Abraham Lincoln Association

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