Apple filed a lawsuit against Samsung in 2011, claiming that Samsung copied the design of the iPhone and iPad and infringed on several of Apple's patents. Samsung then countersued Apple, alleging that Apple infringed on some of Samsung's wireless technology patents. While the two companies are competitors, they also share an important business relationship as Samsung is one of Apple's largest suppliers of phone components. The case involved billions of dollars in damages and determinations of whether Samsung's designs were a natural evolution or a deliberate copy of Apple's products.