About John R.
John R. Lenahan attended the University of Scranton, earning a B.A. in 1972. He went on to complete his J.D. at St. Mary s University School of Law in 1975. Those years framed the start of a long career in litigation and courtroom work.
After law school he entered private practice. Over the decades he has been associated with Lenahan & Dempsey P.C., where he has handled civil cases at trial and on appeal. His work has taken him into state and federal courts, and he maintains memberships in a range of bar organizations that reflect a practice rooted in litigation.
Lenahan is admitted to practice in Pennsylvania and in several federal forums. He is admitted to the U.S. District Court for the Middle District of Pennsylvania, the U.S. Court of Appeals for the Third Circuit, and the U.S. Supreme Court. He is also an active member of the Pennsylvania State Bar and the Lackawanna County Bar Association. His local and national memberships include the American Bar Association, the Federal Bar Association, the American Board of Trial Advocates, the Pennsylvania Trial Lawyers Association, the Pennsylvania Bar Institute, and the International Society of Barristers.
He holds a certification as a Civil Trial Specialist from the National Board of Trial Advocacy. That credential denotes concentrated trial experience and peer review in civil jury and bench practice. His courtroom background and certification inform how he approaches case preparation, evidence, and jury presentation.
Throughout his career Lenahan has focused on civil litigation. He has taken matters through pretrial stages and into trials, and he has argued in federal appellate settings. Colleagues and court records show a steady orientation toward litigation practice rather than transactional work. He has combined courtroom work with participation in bar organizations, contributing to continuing legal education and the professional community in northeastern Pennsylvania and beyond.
At Lenahan & Dempsey P.C. he continues to represent clients in civil matters, drawing on decades of trial experience and appellate practice. His practice today centers on litigation and trial representation, including matters pursued in state courts and federal venues.
