Skip to Content

John G. Cosgrove is an associate in the firm’s General, Tort and Insurance Litigation department.  John concentrates his practice on the defense of businesses in a variety of general liability disputes, including personal injury, negligence, premises liability, property damage and transportation liability cases.

Prior to joining Cullen & Dykman, John worked for a regional insurance defense litigation firm representing businesses, individuals and governmental entities in casualty, construction, healthcare and professional liability matters.

While in law school, John served as a judicial intern for Hon. David B. Cohen of Supreme Court, New York County, and litigated in regional mock trial competitions as a member of the Polestino Trial Advocacy Institute at St. John’s University School of Law.  John also served as the Treasurer of the Catholic Law Student’s Association.

Areas of Concentration

  • Transportation Liability
  • Premises Liability
  • Day Care/Child Care Negligence
  • Liquor Liability
  • Legal Malpractice
  • No Fault, PIP/SUM Claims & Loss Transfer

Practice Areas



  • New York
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the Southern District of New York


  • J.D., St. John’s University School of Law, 2018
  • B.A., Fordham University, 2013

News & Insights