This photo provided by Seoul Semiconductor Co. shows the company’s headquarters in Ansan, Gyeonggi Province.
SEOUL, Dec. 8 (Korea Bizwire) — Seoul Semiconductor Co., a South Korean mid-sized light emitting diode (LED) manufacturer, has won a lawsuit filed by a U.S. patent management company that has been accused of being little more than a patent troll.
The company on Tuesday said it obtained a favorable judgement in a patent lawsuit against DSS Inc., putting an end to four years of litigation.
DSS filed suits against Seoul Semiconductor in the U.S. District Court for the Western District of Texas in 2017 and the District Court for the Northern District of California in 2019, claiming that the South Korean company infringed on four LED package-related patents and should pay royalties.
In 2019, the U.S. Patent Trial and Appeal Board (PTAB) ruled in favor of Seoul Semiconductor, nullifying the claims for three patents.
The PTAB also made a ruling of invalidity for the remaining claim on November, judging that Seoul Semiconductor did not infringe on the patents.
During this process, DSS used the LED-related patents that it purchased from Korean patent licensing firm Intellectual Discovery Co. in 2016.
Seoul Semiconductor holds as many as 14,000 LED manufacturing-related patents.
Kevin Lee (kevinlee@koreabizwire.com)
