Samsung is suing Dyson for 10 billion won (around $9.4 million) following claims from the British vacuum maker that a Samsung product looked like a cynical rip-off of its design. Dyson sued Samsung last year, accusing the company of infringing on its patented vacuum-steering system. That lawsuit was later dropped, but not before depicting Samsung as a repeat patent violator, the Korean company alleges. Samsung confirms in a statement to The Korea Times that the accusations seriously hurt its corporate image, adding that Dysons groundless litigation was intolerable. Samsung is going to take a hard-line stance against patent trolls.