Qualcomm says Apple started the legal fight, and that the iPhone maker continues to use Qualcomm's technology without paying. The company listed six patents that it said Apple should be paying for each time it sells an iPhone. The first patent highlighted by Qualcomm extends battery life by building intelligence into the system so the antenna is always using just the right amount of battery power to transmit. The second improves graphics for mobile games without draining a smartphone battery. The third is a power tracker for multiple transmit signals, and the fourth enables "flashless boot," which means a phone can come to life quickly and connect to the internet when you turn it on. The fifth patent deals with interactions between the applications processor and the modem, two chipsets that were both made by Qualcomm in most iPhones until recently. The final disputed Qualcomm patent deals with efficient connections for high and low voltage circuits.