An employee of KT holds an Apple Inc's iPad 2 (R) tablet and a Samsung Electronics' Galaxy Tab tablet as he poses for photographs at a registration desk at the headquarters of South Korean mobile carrier KT in Seoul, in this picture illustration taken April 22, 2011. Samsung Electronics Co filed patent lawsuits against Apple over the U.S. firm's iPhone and iPad in a tit-for-tat case after Apple claimed Samsung's smartphones and tablets "slavishly" copied its products. Samsung's counter lawsuit, its first against its biggest client, comes days before it launches a new product and could jeopardize business ties between the two companies, as Apple relies on Samsung for component supplies such as chips and LCD displays. REUTERS/Truth Leem (SOUTH KOREA - Tags: CRIME LAW BUSINESS SCI TECH)