David T.  DeZern
Partner, Registered Patent Attorney

I focus on gaining a strong grasp of the complex technologies and business issues at the core of a patent case so I can explain them in a way that any judge or jury can understand. I’ll do whatever it takes to help my clients achieve their goals and protect their interests, whether we’re negotiating a favorable settlement or arguing the case at trial.

David DeZern focuses his practice on guiding both plaintiffs and defendants through every stage of patent litigation matters, from initial evaluation, pleadings, and fact and expert discovery to claim construction, trial and appeals. He has successfully resolved challenging cases involving a variety of technologies, including telecommunications, software, electronic design automation and video coding. David is a registered patent attorney with the United States Patent and Trademark Office (USPTO).

More recently, David has been an integral member of the firm’s trial teams focused on resolving validity, infringement and licensing disputes concerning standard-essential patents to wireless LTE technologies and video compression.

David earned his J.D. and a B.S. in electrical engineering from the University of Texas. Before attending law school, he gained hands-on electrical engineering experience while working as an intern at Dell Computer, Freese & Nichols, National Instruments and Lockheed Martin Aeronautics. 

Representative Experience
  • Served as litigation counsel and helped secure a $506MM verdict in a patent infringement jury trial against Apple (Optis Wireless Technology LLC et al. v. Apple Inc.). Click here to learn more. 
  • Represented owner of standard-essential and implementation patents related to telecommunications and networking in litigations against various smartphone and tablet companies. David was part of the team that recently obtained a jury verdict of infringement, willfulness, no invalidity, and more than $10 million in damages for the client.
  • Represented a manufacturer of power converters for telecom equipment asserting its patents against eleven of its largest competitors. David was part of the team that obtained a $95 million jury verdict, immediately effective permanent injunction, and additional sanctions and supplemental damages. The judgment was affirmed in full by the Federal Circuit, and certiorari was denied. David also participated in a subsequent bench trial that awarded the client additional damages for time periods not covered by the original judgment.
  • Represented a software company asserting its patents related to electronic design automation against one of its competitors. 
  • Represented a software company accused of infringing various patents related to teleconferencing. David was part of the team that secured a dismissal with prejudice for lack of standing. 
Thought Leadership / News
January 3, 2019 
 Press Releases
 Thought Leadership
Federal Circuit Antitrust Law and the Legislative History to the Federal Courts Improvement Act of 1982
26 REV. LITIG. 457
  • Selected by his peers for inclusion in Woodward/White, Inc.'s The Best Lawyers in America in the field of Patent Litigation (2020 - 2022)
Organizational Involvement
  • Barrister, Judge Barbara M. G. Lynn IP Inn of Court (2017 – present)
  • American Intellectual Property Law Association
  • Chief Articles Editor of the Texas Intellectual Property Law Journal
  • J.D., The University of Texas School of Law (2007)
  • B.S., Electrical Engineering, The University of Texas, Eta Kappa Nu, Tau Beta Pi (2004)
Bar Admission
  • Texas
Court Admissions
  • United States District Court, Eastern District of Texas
  • United States District Court, Northern District of Texas
  • United States District Court, Southern District of Texas
  • United States District Court, Western District of Texas
  • United States Court of Appeals, Federal Circuit
  • United States Patent and Trademark Office
When I Feel Most At Home
  • Scuba diving
  • Watching Longhorn football
  • Participating in shooting sports