Broadcom sues Qualcomm over patents

By , IDG News Service |  Mobile & Wireless

Communications chip vendor Broadcom Corp. has sued Qualcomm Inc., seeking to halt the manufacture and sale of key Qualcomm chips.

Two suits, filed in the U.S. District Court for the Central District of California, allege that Qualcomm has infringed a total of 10 Broadcom patents. Broadcom has also filed a complaint with the U.S. International Trade Commission (ITC), seeking to ban the importation of some foreign-manufactured Qualcomm products that allegedly infringe Broadcom patents, according to a Broadcom statement Thursday.

Broadcom, in Irvine, California, is one of the world's largest vendors of communications silicon. It supplies chips for a wide variety of wired and wireless communications systems, including cellular and VOIP (voice over Internet Protocol) as well as cable, satellite, DSL (digital subscriber line) and LAN and carrier infrastructure. Qualcomm, in San Diego, pioneered CDMA (Code Division Multiple Access) and develops chipsets for the cellular technology.

Broadcom said it is seeking unspecified monetary damages from Qualcomm and a permanent injunction to ban the manufacture and sale of its core baseband and RF (radio frequency) chips, including chips for multimedia and for the QChat VOIP technology, which is used for cellular push-to-talk systems.

In its complaint filed with the ITC on Thursday, Broadcom alleged Qualcomm has engaged in unfair trade practices by importing chips and other products that infringe five Broadcom patents. It wants the agency to investigate Qualcomm and ultimately issue an exclusion order to stop imports of those products into the U.S., as well as a cease-and-desist order to stop further sales of the allegedly infringing products, according to the statement.

On Thursday morning, Qualcomm had not yet seen a copy of the lawsuits and was unable to comment, spokesman Jeremy James said.

The patents at issue involve a variety of technologies for multimedia mobile phones, said David Rosmann, vice president of IP litigation at Broadcom. Those technologies include QChat, digital video encoding and decoding, simultaneous voice and data transmission and the use of Bluetooth along with cellular, along with ways to conserve battery life.

Broadcom believes one of the patents involved in the case is central to WCDMA (Wideband CDMA), the technology at the core of one of the major 3G (third-generation) cellular systems, and possibly to the other major 3G system, CDMA2000, Rosmann said.

One of the federal lawsuits involves the five patents that will also be considered by the ITC, Rosmann said. That case most likely will wait for a decision by the ITC, which generally acts more quickly than the federal courts, he said. Broadcom expects the ITC investigation to begin in late June and a hearing to be held early next year.

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