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Justin John Cassell

Patent infringement Attorney at Salt Lake City, UT

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About Justin

Learn Justin’s areas of practice.

Mr. Cassell counsels clients in all areas of United States patent practice, ranging from patent procurement to opinion preparation to licensing.

He has written many patent applications in close cooperation with inventors and actively participates in the management of patent portfolios of companies. He helps clients evaluate inventions in the context of business objectives and applies his extensive prosecution experience to develop internal patent procurement strategies and procedures for clients. He routinely handles applications received from abroad in the United States, as well as filing applications in international patent offices directly and in accordance with the International Patent Cooperation Treaty. Mr. Cassell also counsels clients on patent validity and infringement. He has written numerous opinions to defend clients against charges of willful patent infringement, and has negotiated with opposing counsel about such patents. In addition, he regularly advises clients about infringement risks during the design process and has coordinated clearance studies requiring the evaluation of competitor patents. Prior to attending law school, Mr. Cassell worked as a design engineer with particular focus on industrial applications involving high temperature materials.

Licensed for 20 years
State UT
Status Active
Acquired 2015
Updated 01/07/2023
State VA
Status Active
Acquired 2002
Updated 12/27/2022

We have not found any instances of professional misconduct for this lawyer.

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Workman Nydegger
60 East South Temple
1000 World Trade Center
Salt Lake City, UT, 84111


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AVVO RATING 7.4 (Very Good)

Work Experience

  • Patent Attorney
  • Workman Nydegger
  • 2013 - Present
  • Shareholder
  • Bacon Thomas
  • 2000 - 2013
  • Design Engineer
  • LoTec, Inc.
  • 1997 - 1998
  • Engineer Technician
  • LoTec, Inc.
  • 1996 - 1997
View all work experience


  • The George Washington University Law School
  • JD - Juris Doctor
  • 2001
  • Brigham Young University
  • BS - Bachelor of Science
  • 1997

Languages Spoken

  • English
  • French


  • Ceramic Engineering and Science Proceedings. Vol. 19[4], no. 4, pp. 215-223
  • •Fabrication of NZP Ceramic-Metal Composite Diesel Engine Exhaust Port Liners Using Finite Element Analysis as a Guiding Tool
  • 1998
  • Presented at the Pacific Coast Regional Meeting of the American Ceramic Society
  • •Evaluation of NZP-Based Thermal Barrier Coatings for Turbine Applications
  • 1998

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Salt Lake City Patent infringement Lawyer Justin John Cassell
Justin John Cassell
Patent infringement Attorney
Salt Lake City, UT
Licensed for 20 years