Samsung has filed a lawsuit against LG Display accusing that the latter's OLED displays lack innovation.
According to the Yonhap News agency, the suit was filed with an intellectual property tribunal in Korea, which aims to invalidate seven LG patents due to the fact that they "lack innovation".
The ongoing legal dispute between the two technology firms has been well documented. Back in September, LG Display filed a suit against Samsung alleging that it violated seven organic light-emitting diode patents. The company stressed that the conglomerate violated the design of its OLED panels, driver circuitry and device design.
LG asked the court for an unspecified amount in damages and a permanent injunction of five infringing products, including Samsung's best-selling Galaxy S3 smartphone, its Galaxy Tab 7.7 tablet and the Galaxy Note phablet.
During the summer, 11 current and former Samsung Mobile employees stemming from Samsung Mobile were arrested as they were found guilty in stealing and leaking details to LG about a Samsung AMOLED TV. Six of LG's own workers, however, were involved in the theft of Samsung's OLED technology back in 2011 and 2010.
The two Korean firms compete with each other through the AMOLED (active-matrix organic light-emitting diode) display market. These displays provide thinner, brighter and lighter screens than the usual LCD displays.
Samsung's display panel division experienced a return to profitability during the last quarter with operating profit equaling $1 billion, representing a 19 percent increase over the same period last year.
