John (Jack) is a member of the Casualty Department and co-chair of the firm's auto liability practice group. He focuses his practice on the defense of auto liability, representing over a thousand automobile cases to conclusion. The majority of cases ended in defense verdicts or verdicts lower than the settlement offers. Jack is also the managing shareholder and casualty supervising attorney of the firm's Scranton office with responsibility for the daily operations and oversight of the office's attorneys and support staff.
Jack is a graduate of Penn State University and a former member of law enforcement, having worked for the Lackawanna Sheriff's Department. While attending the Widener University School of Law, Jack worked as the commercial sales manager for ADT Security Systems in Philadelphia and southern New Jersey from 1988 through 1996.
Jack joined Marshall Dennehey in January of 1997 and became a shareholder in 2004. He is currently the lead attorney for the Dunmore High School Mock Trial Team and a basketball coach in his community.
Honors & awards
AV Preeminent by Martindale-Hubbell
The Best Lawyers in America, Insurance Law; Medical Malpractice Law - Defendants; Product Liability Litigation - Defendants
2024-2026
Year joined
1997
Results
Summary Judgment for Marshall Dennehey Client Only, in Multi-defendant Action.
General Liability
May 11, 2018
We obtained summary judgment in a general liability case in the U.S. District Court for the Middle District of Pennsylvania. The plaintiff was an employee of a recently-renovated resort when a solid wooden panel fell down and struck her in the head, causing serious injuries. The plaintiff alleged improper design, manufacture, and installation of the panel against a number of the defendant contractors and subcontractors. It was unclear as to which defendant actually installed the panel.
Thought Leadership
98 Marshall Dennehey Attorneys Recognized in the 2026 Editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America
August 20, 2025
Marshall Dennehey is proud to highlight the firm’s 98 attorneys who have been recognized in the 2026 editions of The Best Lawyers in America and the Best Lawyers: Ones to Watch in America. Less than 6% of all practicing lawyers in the U.S.
On the Pulse...Our Scranton, Pennsylvania, Office
Scranton
June 1, 2023
The Scranton office of Marshall Dennehey is now in its 30th year. The firm began in Scranton with two attorneys practicing workers’ compensation law. Defense Digest, Vol. 29, No.
