Apple is now challenging four key patents as part of its ongoing legal battles with Qualcomm, Bloomberg reports. Specifically, Apple has filed petitions asking the U.S. Patent and Trademark Office to cancel four Qualcomm patents, claiming that the ideas that they cover aren’t new and therefore cannot be patented. All four are part of a patent-infringement lawsuit that Qualcomm filed against Apple last year in response to a patent royalty lawsuit…
