LG Electronics Inc said on Friday it had filed a complaint with the South Korean trade commission to ban imports of LED products from Siemens (SIEGn.DE) lightbulb unit Osram in response to patent infringement litigation by the German firm.

LG joined Samsung LED to countersue Osram, after the German firm said in June that it filed lawsuits against the two business groups in the United States, Germany and Japan and another against LG in China.

Samsung LED countersued in June, filing a patent infringement lawsuit against Osram Korea and two Korean sales agents of the German company at a Seoul district court.

LG said on Friday it had filed the complaint along with its component unit LG Innotek and planned to take similar actions in other major markets including China and the United States.

Osram is the world's No.2 lighting company after Philips , ahead of General Electric Co .

LEDs are electronic semiconductor devices that emit light and boast high energy efficiency, while organic light emitting diodes (OLED) are based on organic compounds.

Osram claimed Samsung and LG infringed its patents on white and surface mountable LEDs.

It said it would seek compensation, adding various prominent companies worldwide have taken royalty-bearing licenses on its conversion technology.

Simens plans to float a majority stake in Osram.