As a Lee & Ko IP patent attorney, Sang Hyun Kim has successfully handled numerous matters across a broad range of intellectual property issues. In addition but not limited to assisting clients with patent prosecutions, trials, litigation, portfolio management and prior art research, he has provided expert IP consulting to both domestic and foreign inventors for every phase of the development of inventions in different technology sectors, including medical devices, UI / UX, artificial intelligence, and video codec circuitry and software.

Sang Hyun is particularly well known for his expertise in handling standard patents related to video codecs (h. 264, HEVC, AVC, etc.), and writing standard matching documents for patent pool registration.