Wireless patent giant

Qualcomm

(QCOM) - Get Report

got hit with two infringement complaints by chipmaker

Broadcom

.

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Broadcom says it sued Qualcomm in U.S. District Court for the Central District of California, seeking unspecified monetary damages and an injunction. The legal challenge focuses on new generations of communications chips used to deliver digital media and voice-over-the-Net features to cell phones.

Broadcom charges that Qualcomm is infringing on a total of 10 patents, and it has requested an investigation by the U.S. International Trade Commission into Qualcomm's chip imports.

Qualcomm was unavailable to comment on the charges early Thursday.

Investors seemed willing to shrug off the patent infringement claims Thursday. Shares of the San Diego wireless tech shop rose 20 cents to $36.75 in late morning trading.

Qualcomm rose to prominence in the wireless industry by aggressively defending its code division multiple access, or CDMA, patents. The company dominates the CDMA chip industry and also collects royalties on every CDMA phone sold in the world.

As telcos move beyond the CDMA wireless standard to more advanced network technology known as the third and fourth generations, or 3G and 4G, Qualcomm has been racing to develop new chips for mobile video and two-way radio called QChat.

Broadcom has specialized in so-called communications convergence chips that try to blend video, data and voice features. The Irvine, Calif., chipmaker claims to have intellectual property rights in areas such as Bluetooth, a wireless device-to-device connection, and WiFi, a wireless computer networking system.

Broadcom shares rose 41 cents to $35.78.