John J. Hamill has been lead counsel in a wide range of complex commercial litigation matters in numerous venues. Subject matters of his litigation experience have included antitrust, sports, health care, ERISA, managed care, class action, energy, telecommunications, tax, professional responsibility, unfair competition, business torts and others. These include cases tried to judgment, appealed, class actions, and many resolved favorably by settlement. He has also counseled clients in all of those areas as well as matters arising under the False Claims Act.

Examples of engagements where he has lead litigation teams include:

  • 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 a professional sports team in various business litigation matters
  • Represented a prominent power utility in multiple class actions, appeals, and regulatory matters 
  • 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 a leading health insurance company in dozens of significant arbitrations involving payment disputes, indemnity issues
  • Represented several leading health insurance companies in a complex arbitration with a transportation company
  • Represented a prominent law firm in a professional liability action
  • Represented a leading healthcare system in an antitrust action
  • Represented a leading health insurance association in multiple RICO actions in multi-district litigation
  • Represented a leading health insurance association in RICO and ERISA litigation
  • Represented a leading benefit administrator in a Department of Labor investigation into ERISA issue
  • Represented telecommunications carriers in regulatory, antitrust, and competition litigation in dozens of federal and state venues
  • Represented a third party administrator in multiple class actions claiming underpayments in the workers compensation field
  • Represented criminal defendants in multiple appellate actions, including direct appeals of murder convictions
  • Represented prisoners in federal civil rights trials concerning conditions of confinement