Seoul Semiconductor and its subsidiary Seoul Weisuo said on September 13 that the US Kmart, which infringes the company's LED-related patent products, has filed a patent infringement lawsuit in the federal court of California. With annual sales of $25 billion and more than 1,000 stores, Kmart is a large global retailer.
Seoul Semiconductor said that LED products sold by Kmart infringed on 8 core patents related to its original LED manufacturing, including high color rendering technology, phosphor combination technology, multi-chip placement technology, LED epitaxial layer growth and chip manufacturing technology. Omni direction LED bulb technology and Acrich MJT technology.
The LED-related patents developed by Prof. Nakamura Shuji, the winner of the 2014 Nobel Prize in Physics, and his colleague Professor Steve Denbaars are also included in this lawsuit. LED filament lamps, which are currently popular in the US market, are also among the patent litigation products due to their design and incandescent lamps.
The lawsuit named Lawrence Gotts as the lead attorney, from the world's top law firm Latham & Watkins, who has been named "Best Patent Litigation Specialist" by professional evaluation agencies such as Chambers and Legal 500. Recently, the patent lawsuit filed against Japanese lens manufacturer Enplas also won the case, and Enplas deliberately infringed the Seoul Semiconductor patent judgment.
Since winning the patent for Taiwan AOT in 2003, Seoul Semiconductor has won all of the more than 50 lawsuits.
In 2014, infringement judgments and damages were awarded to patent infringement lawsuits filed by two North American TV manufacturers; in 2016, the patent lawsuit against Japanese lens manufacturer Enplas determined that Enplas had intentionally infringed and was awarded $4 million; The company's Seoul Weituo also won a patent lawsuit against the US UV LED glue curing equipment manufacturer.
Last month, Seoul's Wei Ao Shi filed a patent infringement lawsuit against the manufacturer of UV LED mosquito traps in the US federal court. Seoul Weisuo Shizheng and his parent company Seoul Semiconductor actively responded to patent infringement.
Mr. Nam Kim Bum, director of the Seoul Semiconductor Research Institute, said that in the past 25 years, Seoul Semiconductor has continuously introduced environmentally friendly products and made great efforts in product research and development in order to promote human health. Through continuous technological innovation, Seoul Semiconductor successfully developed the world's first LED technology and actively promoted the commercialization of such technologies.
"Proprietary patents should be respected. I believe that only innovative products can emerge to create a better living environment." He also stressed that Seoul Semiconductor will actively file patent litigation against companies that are manufacturing and selling patent infringing products. Once the lawsuit begins, it will surely bring justice to the end.

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