Justin Ryu, Esq
Of-counsel
Patent Attorney, admitted in DC
Mr. Ryu’s practice primarily focuses on the preparation and prosecution of patent applications relating to mechanical and electro mechanical designs including, but not limited to, laser and optics, Micro Electro Mechanical System (MEMS), semiconductor & thin film processing, and LED & OLED device.
Mr. Ryu worked for 10 years at Korea Institute of Science and Technology (KIST) as a research scientist in bio & polymer MEMS to design and fabricate micro-actuators and micro-sensors using ionic polymer metal composite, polypyrrole, PDMS, and cardiac muscle cell. He is an author of over 15 international journals and conference papers such as Analytical Chemistry, Journal of Biosensors & Bioelectronics, Japanese Journal of Applied Physics, International Microprocesses and Nanotechnology Conference, International Conference on Intelligent Robots and System etc. He also holds several U.S. patents.
Prior to joining the firm, he worked as a patent attorney at Hahn Loser and Parks LLP, Brooks Kushman, and serval patent boutique firms in the United States for more than 10 years.
Mr. Ryu received a J.D. degree from Case Western Reserve University. He also received his Bachelor and Master of Science in Mechanical Engineering from Purdue University, with a focus on laser micro-machining and MEMS. He is admitted to the District of Columbia (DC) Bar and registered before the United States Patent and Trademark Office (USPTO).

Bar Admissions
District of Columbia
United States Patent and Trademark Office
Education
Case Western Reserve University School of Law, OH, Juris Doctor, 2014
Purdue University, West Lafayette, IN, MS in Mechanical Engineering, 2001
Purdue University, West Lafayette, IN, BS in Mechanical Engineering, 1998
Experience
PnK IP, LLC, of-counsel (2025 - present)
Kile Park Reed & Houtteman, PLLC, patent attorney (2023-2025)
Innovation Counsel LLP, patent attorney (2018-2023)
Brooks Kushman P.C., patent attorney (2017-2018)
Sand and Sebolt LPA, patent attorney (2015-2018)
Hahn, Loeser and Parks LLP, patent agent (2012-2015)
Korea Institute of Science and Technology (KIST), research scientist (2001-2010)
Publications
Fabrication and Mechanical Characterization of Micro Electro Mechanical System Based Vertical Probe Tips for
Micro Pad Measurements,” Japanese Journal of Applied Physics, Oct. 2007
Design And Fabrication Of A Largely Deformable Sensorized Polymer Actuator”, Journal of Biosensors &
Bioelectronic, Nov. 2005
Real Time Measurement Of The Contractile Force Of Self-Organized Cardiomyocytes On A Hybrid Biopolymer
Microcantilever, May. 2005
Thickness Characteristics And Improved Surface Adhesion Of A Polypyrrole Actuator By Analysis Of
Polymerization Process,” The Korean Society of Mechanical Engineers, Oct. 2005