Mr. Nguyen Dac DINH

Nguyen Dac DINH is a senior associate with KENFOX IP & Law Office, a licensed IP agent in Vietnam.

DINH holds a degree in electrical engineering and advises clients on a range of patent issues in electrical, mechanical and technology sectors. He has experience in drafting and revising patent applications for Vietnam and foreign filing.


DINH is also a skilled patent attorney whose practice centers on patent prosecution and strategic portfolio development, client counseling and opinion work. He has experience in preparing and prosecuting patent applications, preparing validity, infringement and freedom-to-operate opinions, handling due diligence reviews in the context of intellectual property sales and acquisitions, assisting clients, including universities and startup companies, with the strategic development of their patent portfolio.


The technologies that DINH has handled are wide-ranging and include: mechanical and electromechanical devices, such as electric motors, scanners and plotters, printing press technology. DINH has also worked with clients to help ensure their products do not infringe third-party patents. He has decades of experience conducting clearance studies where the competitor’s patent was determined to be invalid, or where the client’s product was determined not to infringe.


In other situations, DINH has provided guidance to clients to successfully design around competitors’ patents. DINH also has a great deal of experience preparing clearance opinions, when necessary for protecting clients from charges of willful patent infringement.

  • Conducted numerous patent searches such as FTO searches, pre-filing searches, and pending application/granted patent searches.
  • Filed arguments on behalf of clients in response to office actions, and prepared and filed opposition documents against pending applications and granted patents.
  • Prepared and prosecuted Vietnam and foreign patent applications in a wide variety of mechanical and electromechanical devices.
  • Developed intellectual property portfolios that have provided significant value to clients. Counseled clients of all sizes from independent inventors and small start-ups to large corporations.
  • Worked with clients of all sizes and took a special interest in protecting the intellectual property portfolios of clients as they grow.
  • Conducted product clearance and prior art studies to assist clients in product planning and provides clearance opinions when necessary.
  • Provided guidance to clients in designing around other parties’ patents.