Qualcomm-Broadcom Patent Fight Continues

Qualcomm Inc. filed its third patent-infringement suit since July against Broadcom Corp.

The suit claims that Irvine-based Broadcom misused Qualcomm’s designs for semiconductors used in cellphones, San Diego-based Qualcomm said. Qualcomm is demanding that Broadcom stop using the technology and pay damages.

The companies have filed six lawsuits against each other since last May after Broadcom, a maker of chips for cable-television set-top boxes, began making chips for cellphones.