Overview

Dennis Callahan is a Partner in Freeman Mathis & Gary's Philadelphia office. He is also Vice-Chair of the firm's On Call Trial team and part of the firm's Executive Committee.

Over the course of his 30-year career, Mr. Callahan has tried a wide variety of cases to verdict, including complex contract claims, business torts, and catastrophic personal injury matters. Having studied engineering and worked in a manufacturing environment before embarking on his law career, Mr. Callahan applies a methodical and structured approach to his practice. He has a special interest in matters involving technical or scientific issues—such as products liability and transportation matters—where he can leverage his engineering experience for the benefit of his clients. Mr. Callahan is often called into matters to prepare and present technical experts for deposition and trial, and to cross-examine experts presented by the opposition. Mr. Callahan has been recognized by Best Lawyers since 2016. 

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Bar Admissions

New Jersey

  • New Jersey State Courts
  • U.S. District Court for the District of New Jersey

Pennsylvania

  • Pennsylvania State Courts
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. District Court for the Middle District of Pennsylvania
  • U.S. District Court for the Western District of Pennsylvania

U.S. Courts of Appeals

  • U.S. Court of Appeals for the Third Circuit

Colorado

  • U.S. District Court for the District of Colorado

Education

J.D. (magna cum laude)

Syracuse University College of Law

B.S.

Cornell University

Publications & Engagements

Tort Law Desk Reference: A Fifty State Compendium. Wolters Kluwer. (Pennsylvania Contributing Editor)
Business Torts: A Fifty-State Guide. Wolters Kluwer. (New Jersey Contributing Editor)

Affiliations

  • Defense Research Institute
  • American Bar Association

Awards & Recognition

  • 2024-2026 editions of The Best Lawyers in America®
    • Personal Injury Litigation – Defendants and Product Liability Litigation – Defendants
  • Selected to Pennsylvania Super Lawyers

Education

J.D. (magna cum laude)

Syracuse University College of Law

B.S.

Cornell University

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