The patent licensing model which made Qualcomm mighty is under fierce attack and, despite having escaped takeover by Broadcom, the company may be facing a significant reworking of its intellectual property business. The chip provider announced some adjustments to its model as it announced a sharp decline in profits in its fiscal second quarter, in the wake of mounting legal pressures from customers and regulators. Qualcomm said it had implemented a cap on licensing fees, which could impact the revenue it obtains from large handset makers like Samsung, but is presumably designed to appease such clients and deter them from following Apple into the law courts. CFO George Davis said the firm had introduced “a voluntary revised cap in which…