John P. Sullivan Jr.


John P. Sullivan, Jr. concentrates his practice on intellectual property issues related to new technologies, brand development and strategy, and Internet presence, including the growth and enforcement of brands on social media and in online marketplaces. 

He handles a full spectrum of matters involving:

  • trademarks
  • trade dress
  • product configuration
  • unfair competition
  • trade secrets
  • copyrights
  • false advertising
  • Internet-related intellectual property issues

Additionally, John represents clients in intellectual property litigation matters in both state and federal courts, as well as before the Trademark Trial and Appeal Board and in UDRP proceedings.

John has extensive experience drafting and negotiating software development and license agreements, and creating comprehensive online brand management and trademark/copyright enforcement programs for Fortune 500 clients.

During law school, John served as the symposium editor for the Villanova Environmental Law Journal.

John is often called upon to write and lecture on trademark issues. He is published in numerous publications, including The World Trademark Review, The Legal Intelligencer, and Law360, and is a frequently presents for Philly Tech Week.


  • 2016, Irish Rising Star, listed in Irish Legal 100
  • 2014–2019, “Pennsylvania Rising Star” in Intellectual Property, listed in Super Lawyers



  • Brehon Law Society
  • International Trademark Association
  • Philadelphia Intellectual Property Law Association
Professional Activities

John is an active member of the Philadelphia Intellectual Property Law Association, formerly serving as a Board of Governors member, and having previously served as chair of the Trademark Law Committee from 2013 to 2015.  

He is President of the Brehon Law Society. He also serves on the Internet Committee of the International Trademark Association.

Additionally, John is an active volunteer for Philadelphia Lawyers for the Arts, and a mentors emerging technology and start-up companies through Blackstone LaunchPad.



  • Pennsylvania
  • New Jersey


  • Villanova University School of Law, JD
  • Villanova University, MA
  • Villanova University, BA, magna cum laude