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Samsung files invalidation suit against LG over OLED patents

Samsung has filed a lawsuit against South Korean competitor LG that seeks to invalidate seven of the latter's display-related patents. Samsung has told a Seoul intellectual property tribunal that LG's organic light-emitting diode (OLED) panel technologies lack innovation, according to the Yonhap news agency.

This is not the first time that the two rivals have come to loggerheads, as September saw LG accuse Samsung of releasing a range of devices - including the Galaxy S3, Galaxy Note, and Galaxy Tab 7.7 - that infringe upon the very same patents that are presently under contention.

Hostilities have even led to charges of larceny, as three LG executives were charged with the theft of display technology from Samsung earlier this year.

The two companies are the world leaders in the manufacture of LCD panels, with LG lagging behind Samsung. The resulting battle for supremacy of the shrinking TV market has likely intensified the friction observed in the two firms' recent dealings.