Qualcomm Inc. says its fight with Apple Inc. over how much the chipmaker can charge for essential patented technology used in iPhones and iPads is getting pricey. \u201cThey\u2019re trying to destroy our business," Qualcomm lawyer Evan Chesler said at a hearing Friday in federal court in San Diego. "They\u2019re now $7 billion dollars behind in royalties. The house is on fire and there is $7 billion of property damage right now.\u201d Qualcomm wants as many as 56 patent-related claims and counterclaims cut from a lawsuit with Apple and its Asian manufacturers, arguing that these are just a sideshow to the broader licensing dispute between the companies. Apple, through its manufacturers, halted royalty payments to Qualcomm last year and the tech giants\u2019 showdown has escalated into some 100 legal proceedings around the world. Apple argues that Qualcomm is using its intellectual property to bully customers into paying excessive royalties even as it tries to duck scrutiny over whether its patents are valid. \u201cYou can\u2019t just let Qualcomm walk away from this,\u201d Apple\u2019s lawyer, Ruffin Cordell, told the judge at Friday\u2019s hearing.