William J. Conroy






1978, B.A., Lycoming College
1982, J.D., Temple University School of Law


New Jersey
New York


Commonwealth of Pennsylvania
U.S. District Court, Eastern District of PA
U.S. District Court, Middle District of PA
U.S. District Court, Western District of PA
State of New Jersey
U.S. District Court for the Southern District of New York
U.S. District Court, District of New Jersey
N.Y. State

U.S. Court of Appeals, 3rd Circuit
U.S. Supreme Court



Aviation / Aerospace

Construction Industry Litigation


Insurance Defense

Material Handling

Transportation / Trucking


Appellate Practice

Class Actions

Intellectual Property

Products Liability Defense

Professional Liability


Bill Conroy currently focuses his practice on the litigation of catastrophic injury cases and has devoted his practice to trial work for almost 35 years. Bill has tried cases in more than 30 states throughout the country and serves as regional and national trial counsel for various institutional clients. Among other distinctions, Bill is a fellow of the American College of Trial Lawyers and is an Advocate in The American Board of Trial Advocates. Additionally, he is featured in Chambers USA as a “Leader in his Field” nationwide for Products Liability & Mass Torts.

  • American College of Trial Lawyers 
  • American Board of Trial Advocates
  • International Association of Defense Counsel
    • Faculty Member, 35th Annual IADC Trial Academy, Stanford Law School, 2007
  • Defense Research Institute
  • Pennsylvania Defense Institute
  • Federation of Defense and Corporate Counsel
  • Product Liability Advisory Council
  • Philadelphia Association of Defense Counsel

  • Inducted as a Fellow of the American College of Trial Lawyers
  • Recognized by The Legal 500 as a Product Liability and Mass Tort Defense: Automotive/Transport Leading Lawyers nationwide for 2018. This marks the sixth consecutive year that William Conroy has been named to this list.
  • Ranked in Chambers USA in Products Liability & Mass Torts: Nationwide, 2010, 2011, 2012. 2013, 2014, 2015, 2016, 2017, 2018
  • Designated as a “Leader in his Field” by Chambers USA for Nationwide Products Liability and Mass Torts 2010
  • Selected by his peers as the 2016 & 2010 Best Lawyers Lawyer of the Year for Product Liability Litigation in the Philadelphia Area
  • Selected by his peers for inclusion in “The Best Lawyers in America” in the field of Products Liability Litigation – Defendants every year since 2007
  • AV® Preeminent™ Peer Review Rated
  • Listed in the “Who’s Who Legal for Product Liability Defence & Life Sciences – Product Liability”
  • Designated a Super Lawyer 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018

Campbell Conroy & O’Neil Obtains Summary Judgment in American Family Mutual Insurance Company v. Omega Flex, Inc.

March 2021

Bill Conroy, Lynne Ingram, Kate Wang, and Erin Grewe obtained summary judgment on all of plaintiffs’ claims in Mark Shanley, Amy Shanley, and American Family Mutual Insurance Company v. Omega Flex, Inc. pending before the Honorable Stephen L. Crocker in the United States District Court for the Western District of Wisconsin. In that case, plaintiffs…


Tincher v. Omega Flex, Inc.

February 2018

On November 19, 2014, the Supreme Court of Pennsylvania decided the case of Tincher v. Omega Flex, Inc., significantly changing the landscape of the state’s product liability law by adopting a new design defect test for strict product liability cases and unanimously overruling Azzarello v. Black Brothers Co., 391 A.2d 1020 (Pa. 1978). Campbell Campbell…


Plaintiff American Automobile Insurance Company, as assignee of Fred and Adrienne Kostecki v. Omega Flex, Inc.

March 2015

Plaintiff American Automobile Insurance Company, as assignee of Fred and Adrienne Kostecki, brought this subrogation action against Omega Flex, Inc. Plaintiff sought to recover money it paid to its insured’s, Fred and Adrienne Kostecki, to rebuild their home and replace their damaged contents, following a lightning strike to a tree on their property and a…


Campbell Conroy & O’Neil Achieves Appellate Win for Auto Manufacturer

Campbell Conroy & O’Neil Granted Summary Judgment in Ford Auto Part Box Case