LG Electronics and Sony have entered into a cross-license agreement to share patent portfolios, calling a truce in a patent war that began last year.

LG said Thursday the two firms agreed to drop patent infringement lawsuits but did not reveal the details of the deal.

Sony filed a complaint in December last year with the U.S. International Trade Commission claiming that LG infringed its patent technologies for mobile phones. In response, in February this year LG sued the Japanese firm for patent infringement over digital TVs and Blu-ray technology in the U.S. and Europe.