• vcard
212.413.2837
  • Education
    • J.D., Harvard Law School, 1984
    • B.S., Cornell University, 1981
  • Bar Jurisdictions
    • New York, 1985
    • New Jersey, 2009
    • Admitted to practice before the United States Patent and Trademark Office, 2001
  • Court Admissions
    • U.S. Supreme Court, 1993
    • U.S. Court of International Trade, 1993
    • U.S. Court of Appeals, Federal Circuit, 1996
    • U.S. Court of Appeals, Third Circuit, 1995
    • U.S. Court of Appeals, District of Columbia Circuit, 1988
    • U.S. District Court for the District of Columbia, 2017
    • U.S. District Court, Northern District of Illinois, 1999
    • U.S. District Court, Southern District of Indiana, 1995
    • U.S. District Court, Eastern District of Michigan, 1993
    • U.S. District Court, Northern District of New York, 2003
    • U.S. District Court, Eastern District of New York, 1985
    • U.S. District Court, Southern District of New York, 1985
    • U.S. District Court, District of New Jersey, 2015
    • U.S. District Court, Western District of Pennsylvania, 1994
John Cleary’s practice focuses on serving the Litigation and Technology Transaction and Data Privacy needs of U.S. companies, with an emphasis on data security incidents and other cyber-related losses and controversies.

John brings his litigation and dispute resolution skills to bear on problems faced by clients across an array of settings, principally in the areas of cybersecurity, class action defense, intellectual property, insurance, banking and maritime law. John previously served as an Assistant U.S. Attorney in Washington, D.C., representing U.S. government agencies and officials across a range of constitutional and other federal sector issues.
  • Secured dismissal on the pleadings of a 100,000-plus member putative class action for lack of federal question jurisdiction over HIPAA-related allegations incorporated into state law tort claims
  • Secured voluntary release of client’s data on the eve of possible injunction proceedings involving health care provider and a managed service provider that had suffered a prolonged outage due to a ransomware attack
  • Representation of U.S. health care providers, municipalities, manufacturers and educational institutions in defense of actual or potential privacy and financial loss claims arising out of data security incidents
  • Class action defense of tort, contract and statutory claims arising out of data security incidents in the health care and educational sectors
  • Representation of public traded company in defense of six class actions under federal securities laws alleging misstatements in proxy materials
  • Defense of aluminum manufacturer through multiple stages of a toxic tort class action alleging personal injury and property damage in St. Croix, U.S. Virgin Islands
  • Representation of financial institution in connection with mass action involving anti-terrorism and terrorist financing issues
  • Trial defense and successful verdict in pharmacy sector employment discrimination case alleging failure to accommodate religious beliefs and practices
  • Representation of professional service firm in connect with Section 1782 application in New York for discovery in support of foreign proceedings
  • Representation of financial institution in energy sector copyright infringement matter
  • Representation of Lloyd’s and London market interests in civil suits and reinsurance arbitrations arising out of extended warranty coverage for U.S. and Canadian automobiles and personal computers
  • Amicus briefing on behalf of the New York Intellectual Property Law Association of patent-antitrust issues before the U.S. Supreme Court (FTC v. Watson)
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Maritime Cybersecurity Legal and Regulatory Developments
Chair, Spring Meeting, Cybersecurity Committee, Maritime Law Association of the United States
April 30, 2021
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Co-Author, 4Hoteliers
February 23, 2021
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Quoted, Law360
May 26, 2020
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Co-Author, COVID-19 Blog
May 15, 2020
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Maritime Cybersecurity Legal and Regulatory Developments
Moderator, Spring Meeting, Cybersecurity Committee, Maritime Law Association of the United States
April 28, 2020
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Co-Author, Law.com
October 2, 2019
eAlerts Updates
August 2019
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Cybersecurity and Maritime Law Update
Moderator and Panelist, Spring Meeting, Maritime Law Association of the United States
May 1, 2019
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Cybersecurity and Maritime Law Update (Federal Sector)
Moderator and Panelist, Spring Meeting, Maritime Law Association of the United States
April 30, 2019
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Cyber Risk Management Table Top Exercise
Moderator, Fall Meeting, Maritime Law Association of the United States
October 18, 2018