Accolades
Profile
Work Department
Position
Chair, Appellate Advocacy & Post-Trial Practice; Member, Executive Committee
Career
John is chair of Marshall Dennehey’s Appellate Advocacy and Post-Trial Practice Group and a member of the firm's Executive Committee. He has litigated more than 500 appeals in state and federal appellate courts. As litigation counsel, John has represented individuals, insurers, and corporations in some of the most high-profile litigation in recent Pennsylvania history, including dozens of cases with verdicts and settlements in excess of $10 million. John serves by appointment of the Supreme Court of Pennsylvania as the co-chair of the Court’s Historical Commission and on the Commission on Judicial Independence, a group of state and federal judges, academics, and attorneys who work to promote public awareness of the importance of a strong, independent judiciary in a free society. He also spent six years on the Supreme Court’s Civil Procedural Rules Committee, the last two years as chair, and served on the Board of Governors of the Bar Association of the Third Federal Circuit and as co-chair of the Amicus Curiae Committee of the Pennsylvania Defense Institute. He also serves on the advisory board of Ohlbaum on the Pennsylvania Rules of Evidence (Lexis-Nexis) and regularly speaks at appellate court events and continuing legal education seminars.
Memberships
American Academy of Appellate Lawyers, Fellow, 2016 Bar Association for the Third Federal Circuit International Association of Defense Counsel, 2018 Pennsylvania Bar Association Pennsylvania Defense Institute, 2008 Pennsylvania Supreme Court, Civil Procedural Rules Committee, 2015-2021; Chair, 2019-2021 Pennsylvania Supreme Court, Historical Commission, Co-Chair, 2023 Pennsylvania Supreme Court, Commission on Judicial Independence, 2024
Education
Princeton University Ph.D. Coursework 1999 University of California, Berkeley M.A. 1998 Duquesne University School of Law J.D. 1993 Indiana University of Pennsylvania B.A. 1990
Content supplied by Marshall Dennehey, PC
Key clients
- AmerisourceBergen
- Bayer U.S. LLC
- Campbell Trial Lawyers
- Cardinal Health, Inc.
- Cassatt RRG Holding Co.
- Chubb
- Combe, Inc.
- FedEx
- Gordon Rees Skully Mansukhani
- Janssen Pharmaceuticals
- Johnson & Johnson
- McKesson Corp. a/k/a Cencora, Inc.

