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Recently reviewed Professionals
Myungsik Yu has successfully handled numerous IP matters, such as patent prosecutions, trials, litigation, opinions, licensing and various IP transactions since becoming a patent attorney in 2013.

He has particularly extensive experience in prosecuting a variety of different patents involving a broad range of technologies, including patents relating to organic-inorganic compounds, polymers, pharmaceuticals, microorganisms, petrochemical processes, petrochemical products, secondary batteries, catalysts, organic light-emitting devices (OLEDs) materials, tobacco materials and semiconductor materials. Myungsik has also successfully represented clients in many cases before the Korean Intellectual Property Office (KIPO), IP Tribunal and Patent Court.
Representative Cases
Patent infringement action / patent invalidation action regarding therapeutic agents for HIV/AIDS patent
Patent infringement action / patent invalidation action regarding polycrystalline silicon patents
Patent infringement action / patent invalidation action regarding SiC material patents
Patent infringement action / patent invalidation action regarding breakable capsule patents
Patent infringement action / patent invalidation action regarding LCD composition patents
Patent infringement action regarding polyimide film patents
Patent infringement action / patent invalidation action regarding LCD display
Patent infringement action / patent invalidation action regarding Li secondary battery
Patent invalidation action regarding glass-fiber reinforced plastic pipe
Patent invalidation action regarding thin film forming materials for semiconductors
Patent infringement action / patent invalidation action regarding cathode active material of Li secondary battery
Patent infringement action regarding high-sensitivity detection device for biomolecules
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Education
2009 Seoul National University - B.S. Chemical and Biological Engineering
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Work Experience
2016-Present Lee & Ko IP
2013-2016 Comet International Patent Office
2009 SK Energy, Heavy Oil Upgrading Team, Process Engineer
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Admissions
2013 Admitted to the Korean patent bar
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Languages
Korean and English