Associate / Washington, DC / 202-626-6431

Won S. Yoon

Won S. Yoon is dedicated to helping clients with a variety of patent legal services ranging from patent prosecution, PTAB post-grant proceedings, due diligence, infringement and invalidity opinions, and freedom-to-operate analysis. Won’s legal practice is based on an extensive technical background in numerous areas of electrical engineering and computer science, including communication systems and networks, standard essential patents (SEPs), dynamic feedback control, photonics, semiconductors, and artificial intelligence and machine learning.

Won’s technical background includes research at Lucent Bell Laboratories, MIT Lincoln Laboratory, and IBM T.J. Watson Research Laboratories. Won’s graduate studies at MIT’s electrical engineering and computer science (EECS) department included Ph.D.-equivalent coursework and research in the fields of control and communication technologies.


J.D., Georgetown University Law Center (2017)

E.E., Electrical Engineering and Computer Science (Ph.D. equivalent coursework), Massachusetts Institute of Technology (2011)

S.M., Electrical Engineering and Computer Science, Massachusetts Institute of Technology (1998)

B.S. summa cum laude, Electrical Engineering, Columbia University (1996)


  • Maryland 2018
  • U.S. Patent and Trademark Office 2013


  • Columbia University William Everitt Student Award of Excellence
  • Columbia University Edwin Howard Armstrong Award
  • MIL3 OPNET Modeling Excellence Award for Most Outstanding Paper


Representative examples of Won’s work include:

  • Patenting dynamic feedback control techniques in wellbore operations for a multinational oil and energy company;
  • Patenting novel machine-learning speech recognition and image recognition for a multinational computer software company;
  • Protecting a multinational consumer electronics company against infringement allegations through successful inter partes review (IPR) of competing patents related to mobile inter-networking; and
  • Conducting invalidity and infringement due diligence for an extensive portfolio of standard essential patents (SEPs) for a multinational consumer electronics company in 4G/5G wireless communications.


  • “Streaming Transmission of Poisson Traffic,” Proceedings of the 2008 IEEE International Symposium on Information Theory, Toronto (July 2008)
  • “Transmission of Bursty Data over Wideband Fading Channels,” Proc. 2003 IEEE ISIT, Yokohama (July 2003)
  • “Delay-Optimal Power Control for Wireless Data Users with Average Power Constraints,” Proc. 2002 IEEE ISIT, Lausanne (June 2002)
  • “Fault Diagnosis in an All-Optical Network,” IEEE Journal of High Speed Networks, 10(4):269-291, 2001
  • “Batch Wavelength Assignment for All-Optical Central-Switch Networks,” Proc. 1998 OFC Conference (San Jose, 1998)
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