John T. Mockler

Of Counsel / Dallas Metro Office

As a registered patent attorney for more than two decades, John holds a substantial record of delivering favorable results to clients.  He counsels companies from the U.S. and abroad in building winning strategies to protect their intellectual property assets.  His negotiation skills deliver rock-solid licensing agreements that leverage assets and boost the bottom line.  He regularly provides freedom to practice and infringement analyses, and, when litigation cannot be avoided, protects his clients in court.

John has worked with clients that range from startups to Fortune 500 companies and cover a broad scope of technology areas, including telecommunications, semiconductors, analog and digital electronics, industrial controls, electromechanical systems, oil and gas, and medical devices.  Whether big or small, his clients call on him when they need full-service results — from preparing and prosecuting patents, to conducting infringement analyses, to licensing the issued patents, and beyond.  For his clients who are acquiring businesses, he handles due diligence and trade secret investigations.  Clients appreciate his comprehensive knowledge in all areas of intellectual property law and his ability to cut to the essentials of what their businesses need.

  • Represented a telecommunications company in due diligence and theft of trade secrets analysis in a patent portfolio acquisition by a Fortune 500® company
  • Represented a major international semiconductor manufacturer in patent licensing, litigation, infringement and invalidity analysis, and patent prosecution
  • Developed intellectual property portfolio and strategy for a company with 100+ employees that supplies user terminals to the restaurant industry in the U.S. and Europe
  • Represented a video processor company, including preparing a patent for a TV tuner that was later the subject of patent infringement litigation that resulted in a highly favorable result for the client
  • Drafted and prosecuted network and mobile handset patents for a major Asian electronics company, ultimately supervising a portfolio of over 1000 patents procured over more than a decade
  • Developed and managed patent portfolio for a Fortune 500® defense contractor
  • Obtained a favorable settlement on behalf of a patent owner against a software application developer.


  • Moderator, “A Panel Discussion of Section 101 – Substance and Procedure at the Patent Office and in Court,” Dallas Bar Association Intellectual Property Section, March 2015

Before entering law school, John was employed by Grumman Aerospace Corporation for seven years as an Electrical Engineer.

Awards & Distinctions

  • Texas Super Lawyers, Intellectual Property, 2004, 2005, 2010-2018
  • D Magazine, “Best Lawyers for Intellectual Property,” 2014, 2016


  • American Bar Association
  • New York State Bar Association
  • Dallas Bar Association
  • Collin County Bar Association
  • Institute of Electrical and Electronic Engineers
  • International Trademark Association



J.D., Hofstra University School of Law, 1993

M.S., Electrical Engineering, Polytechnic University of New York, 1989

B.S., Electrical Engineering, Manhattan College, 1983

Bar & Court Admissions


New York

U.S. Patent and Trademark Office

U.S. Court of Appeals for the Federal Circuit

U.S. District Court for the Eastern District of Texas

U.S. District Court for the Northern District of Texas