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O. Daniel Ansa - Philadelphia, PA

1600 JFK BoulevardSuite 900Four Penn Center Philadelphia, PA 19103

Updated: 06/12/2013

Philadelphia National Trial Practice Lawyer


Mr. Ansa has a diversified civil trial practice, with a particular emphasis on transportation, products liability, commercial disputes and tort litigation. He has also handled employment discrimination litigation, environmental abatement actions, class actions, construction disputes and mass tort...

Mr. Ansa has a diversified civil trial practice, with a particular emphasis on transportation, products liability, commercial disputes and tort litigation. He has also handled employment discrimination litigation, environmental abatement actions, class actions, construction disputes and mass tort.

The majority of his practice involves the representation of Fortune 500 and international companies involved in transportation, products liability, catastrophic personal injury and property tort matters and commercial litigation. He is frequently retained to assume lead role in high exposure cases on the eve of trial.

He serves as national coordinating counsel for an international package delivery company. As national counsel, he actively litigates cases venued throughout the United States, manages a network of local counsel and oversees a rapid response team consisting of attorneys and retained consultants whose mission is to triage and manage catastrophic events. He also serves as regional counsel for an international manufacturer of vertical transportation equipment.

He has defended the design and manufacture of many products produced by his clients including: automobiles, tractors, trains, elevators, escalators, power walks, motorcycles, personal water craft, ATVs, vibratory compactors, heavy and light industrial vehicles, construction equipment, mining equipment, power tools, milling machinery, steel fabricating systems and equipment, firearms, anti-lock braking and conventional braking systems, tractor-trailer air brake systems, seat belt assemblies, air bags, flex fans, consumer products, snow throwers, bicycles, helmets, locks, door closers, pneumatic, hydraulic and mechanical controls, press machines, paper mill machines, boilers, fire cause and origin cases, chemicals, and multiple chemical sensitivity cases. As an associate, he served as a member of a national trial team for an automotive component manufacturer.

Mr. Ansa is a graduate of the Naval Justice School and is a retired Lieutenant Colonel in the United States Marine Corps Reserve. He held a reserve billet in the office of the Chief Defense Counsel of the Marine Corps, was a member of the Marine Corps Trial Advocacy Team and lectured nationally and internationally on trial practice. Mr. Ansa has lectured in Europe, Africa and Asia as an adjunct faculty member of the Defense Institute for International Legal Studies. He has served as a guest lecturer on products liability at the Wharton School and on trial practice at Villanova University, has conducted in-house seminars for corporate legal departments and has participated in panel discussions at client legal symposiums. He has also written extensively on products liability, rules of evidence and construction disputes.

Mr. Ansa is a member of the following bars: Pennsylvania, United States Court of Military Appeals, U.S. District Court, Eastern District of Pennsylvania, Third Circuit Court of Appeals, United States Supreme Court, U.S. District Court, Western District of Pennsylvania, New York, U.S. District Court, Northern District of Texas, Texas, Fourth Circuit Court of Appeals, and Colorado.

About O. Daniel Ansa

Current Employment Position(s)

  • Managing Partner


  • English

Practice Areas

  • National Trial Practice
  • Appeals
  • Mediation


  • 100%


Bar Admissions

  • Pennsylvania
  • New York
  • Texas
  • Colorado
  • U.S. District Court Eastern District of Pennsylvania
  • U.S. District Court Western District of Pennsylvania
  • U.S. District Court Northern District of Texas
  • U.S. Court of Appeals 3rd Circuit
  • U.S. Court of Appeals 4th Circuit
  • U. S. Court of Military Appeals
  • U.S. Supreme Court

Other Affiliations

  • TIDA
  • DRI

Classes and Seminars

  • Trial Advocacy, Marine Corps Trial Advocacy Team
  • Adjunct Faculty, Defense Institute for International Legal Studies
  • Products Liability, Wharton School
  • Trial Practice, Villanova University

Past Positions

  • DLA Piper, Philadelphia, Partner
  • United States Marine Corps Reserve, Lieutenant Colonel (retired)
  • United States Marine Corps, Reserve Billet, Chief Defense Counsel


  • University of Pittsburgh School of Law, Pittsburgh, Pennsylvania, 1987
  • Lake Forest College, Lake Forest, Illinois, 1984

Office Information


1600 JFK BoulevardSuite 900Four Penn Center Philadelphia, PA 19103


  • 267-528-0726

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