A woman displays "Siri", voice-activated assistant technology, on an Apple iPhone 4S in Taipei on July 30, 2012. Taiwan's National Cheng Kung University has filed a suit against US tech giant Apple, claiming the company's Siri intelligent assistant has infringed on two of its patents. AFP PHOTO / Mandy CHENG (Photo credit should read Mandy Cheng/AFP/GettyImages)