Jilin OLED subsidiary challenges LG Chem OLED patent in Korea

Filed a subsidiary of China's Jilin OLED, Shanghai Climb Chemical Materials Co., Ltd., an invalidation trial before Korea's Intellectual Property Trial and Appeal Board against LG Chem's patent 1499356, titled "Heterocyclic compound and organic light-emitting device comprising same", according to zdnet.co.kr. The trial board sent both parties a notice of the oral hearing date in late October this year.

Patent 1499356 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.

The case is the first time a Chinese company has filed an invalidation trial against an LG Chem OLED patent.

Overlapping material lines

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.

Jilin OLED reported revenue of 605.99 million yuan and net profit of 182.42 million yuan for the January-September period this year. Its subsidiary filed the invalidation trial in November last year.