David J. Wolfsohn is a nationally renowned intellectual property trial lawyer. A Fellow of the American College of Trial Lawyers, he has been described in Chambers USA (where he is listed in Band I) as a "phenomenal litigator" with a "wonderful combination of technical knowledge and ability to connect with a jury and clients” as well as someone who is "detail oriented, very smart and aggressive in the courtroom, and it works." In 2020, Mr. Wolfsohn was named Philadelphia Lawyer of the Year in trademark litigation by Best Lawyers in America, and in 2012 he received that award for copyright litigation. Among the jury verdicts he has obtained is a defense verdict for the H.J. Heinz Company in a jury trial over the idea for the Dip and Squeeze and the largest indirect-profits copyright award in The Graham Company v. USI MidAtlantic.
Moon Express v. Intuitive Machines (D. Del.). Obtained jury verdict on behalf of Intuitive Machines in a lawsuit over IP ownership and work performed on moon landing software and robotic space shuttle.
Wawrzynski v. H.J. Heinz Co., et al. (W.D. Pa.). Obtained defense verdict in dispute over ownership of ideas for Heinz's Dip and Squeeze ketchup package.
The Graham Company v. USI MidAtlantic & Haughey (3d Cir.) After two appeals to the Third Circuit and two (denied) petitions for cert., received affirmance of $30.4 million judgment based on jury award in copyright case claiming indirect profits under section 504(b) of the Copyright Act.
Yellow Pages Photos, Inc. v. Ziplocal LP and Yellow Pages Group, LLC (M.D. Fla.) Plaintiff obtained nominal jury award against our client where plaintiff was claiming $1.5 billion in damages. District court denied request for fees. Eleventh Circuit affirmed ruling on what constitutes a “work” for purposes of copyright statutory damages.
- deCode v. Hakonarson et al. (E.D. Pa 2007). Obtained favorable settlement on behalf of The Children’s Hospital of Philadelphia and four scientists in trade secret/non-compete case.
- US Office Products v. Allied Office Supplies Inc. et al. (D. Del.). Obtained preliminary injunction and $5.8 million settlement in corporate raid case involving theft of trade secrets on behalf of $1 billion office products company.
TruePosition v. Andrew Corp. (Del. Super. Ct.). Obtained high seven figure settlement in patent licensing dispute.
- Nixon v. Commonwealth, 576 Pa. 385, 839 A.2d 277 (2003). Pro bono representation of rehabilitated ex-felons challenging constitutionality of employment ban; Supreme Court held ban unconstitutional.
Areas of Practice
- Intellectual Property Litigation
- Unfair Competition
- Trade Secrets
- Supreme Court of the United States
- U.S. District Court for the Eastern District of Pennsylvania
- U.S. District Court for the Western District of Pennsylvania
- U.S. Court of Appeals for the Third Circuit
- U.S. Court of Appeals for the Eleventh Circuit
- University of Chicago Law School, J.D., cum laude, 1988
- Order of the Coif
- Manhattan School of Music, Doctor of Musical Arts, 1984
- Villa Schifanoia Graduate School of the Fine Arts, M.M., 1976
- Beloit College, B.A., 1974
- Duane Morris LLP
- Partner, 2013-present
- Woodcock Washburn LLP
- Partner 2005-2013
Hangley Aronchick Segal & Pudlin
- Shareholder, 1994-2005
- Associate, 1989-1994
- The Hon. Walter K. Stapleton, Court of Appeals for the Third Circuit
- Law Clerk, 1988-1989
- Fellow of the American College of Trial Lawyers
- American Bar Association
- Co-Chair Regional Meetings Committee (2018-present)
- Section of Litigation, Division VI
-- Co-Director, 2016-2017
-- Co-Chair, Intellectual Property Litigation Committee
-- Co-Chair, Trial Evidence Committee, 2009-2012
- Federal Bar Association
- Treasurer, Eastern District of Pennsylvania Chapter
- The Copyright Society of the U.S.A.
- Philadelphia Chapter Chair, 2007-2009
- Philadelphia Bar Association Commission on Judicial Selection and Retention
- Member, Investigative Division
- Philadelphia County Court of Common Pleas
Honors and Awards
- Fellow, American College of Trial Lawyers (since 2016); member, Complex Litigation Committee
- Band I in Chambers USA: America's Leading Lawyers for Business
- Named a Best Lawyers "Lawyer of the Year" in Trademark Law, Philadelphia, 2021
Listed in The Best Lawyers in America for Intellectual Property Litigation, 2007-2021
- Named Best Lawyers' Philadelphia Lawyer of the Year in Copyright Litigation, 2012
- AV Preeminent® Peer Review Rated by Martindale-Hubbell®
Listed as a "Trademark and Copyright Star" in Managing Intellectual Property's IP Stars, 2015-2021
- Named an "Unsung Hero" in The Legal Intelligencer’s Professional Excellence Awards 2020
Listed as a Pennsylvania Super Lawyer for Intellectual Property Litigation, 2004-2021
Named a Local Litigation Star by Benchmark Litigation, 2019
Philadelphia Inquirer: Influencer of Law, 2019
Ranked in the IAM Patent 1000, 2018
Civic and Charitable Activities
- Astral Artistic Services
- Board Member
Selected Speaking Engagements
- Speaker, "Lessons from Recent Trade Secret Cases," DuPont & Widener University School of Law IP CLE Seminar, October 2012
- Speaker, "Top Ten Mistakes to Avoid in Depositions," ABA Section of Litigation Annual Meeting, Miami, Florida, April 2011
- Speaker, "Copyright for the General Practitioner," New York County Bar Association
- Speaker, "eDiscovery: Philadelphia Law Department CLE 'Boot Camp,'" July 2008
- Speaker, "Deposition Basics," ABA Section of Litigation Annual Meeting, Atlanta, Georgia, April 2008
- Speaker, "An Argument by Any Other Name: How to 'Argue' Permissibly in Opening Statements," ABA Annual Meeting, San Francisco, California, August 2007