LG Chem OLED patent invalidation trial heads to oral hearing
Korea's patent tribunal notified both parties of the oral hearing date in late October, according to ZDNet Korea.
Korea's Intellectual Property Trial and Appeal Board has sent a notice of oral hearing date to LG Chem and Shanghai Climb Chemical Materials Co., Ltd. in a patent invalidation case over an LG Chem OLED materials patent, according to ZDNet Korea. The notice went to both sides in late October 2026.
The disputed patent, number 1499356 and titled "Heterocyclic compound and organic light-emitting device comprising same", covers OLED device materials used in electron injection layers, electron transport layers, hole injection layers, hole transport layers and emission layer hosts. It was filed in 2013 and registered in 2015.
Shanghai Climb Chemical Materials, a subsidiary of Chinese OLED materials maker Jilin OLED, filed the invalidation trial in November 2025. It is the first time a Chinese company has filed an invalidation trial against an LG Chem OLED patent.
Jilin OLED's main products in the OLED materials market are electron injection layer materials and red, green and blue primes. LG Chem's OLED materials line includes electron transport layers, hole injection layers, hole blocking layers, RGB hosts and blue prime.
In late October 2026, Jilin OLED reported revenue of 605.99 million yuan and net profit of 182.42 million yuan for the January-September period.
Quick answers
Which patent is at issue in the LG Chem OLED case?
Patent 1499356, titled "Heterocyclic compound and organic light-emitting device comprising same", filed in 2013 and registered in 2015.
Who filed the invalidation trial against LG Chem?
Shanghai Climb Chemical Materials Co., Ltd., a subsidiary of Jilin OLED, filed it in November 2025.