SiRF Requests Reexamination of Broadcom Patents Asserted Against SiRF

Substantial New Questions of Patentability Raised by Prior Art Relating to Broadcom's Patents-in-Suit; Ex-Parte Reexamination Request Filings Completed

SAN JOSE, Calif. -- Aug 06, 2008 -- SiRF Technology Holdings, Inc. , a leading provider of GPS-powered location platforms, today announced that it has completed filing with the U.S. Patent and Trademark Office respective Requests for Ex-Parte Reexamination of each of the four patents that Broadcom recently asserted against SiRF in the Santa Ana, California federal district court.

Through its respective Reexamination Requests and in view of substantial new questions of patentability raised by prior art not previously considered by the Patent Office, SiRF seeks review and invalidation of all four of the Broadcom patents-in-suit. Additionally, SiRF intends to seek a stay of the federal district court case.

About SiRF Technology Holdings, Inc.

SiRF Technology Holdings, Inc. develops and markets location platforms based on semiconductor and software products that are designed to enable location-awareness utilizing GPS and other location technologies, enhanced by wireless connectivity and multimedia capabilities for high-volume mobile consumer devices and commercial applications. SiRF's technology has been integrated into a wide range of mobile consumer devices such as automobile navigation systems, portable navigation devices (PNDs), mobile phones, mobile computers, GPS-based peripherals and handheld GPS devices, and into commercial applications such as location servers, asset tracking devices and fleet management systems. SiRF markets and sells its products in four target platforms: wireless handheld devices such as mobile phones; automotive electronics systems, including navigation and telematics systems; consumer electronics products such as recreational GPS handhelds, mobile gaming machines, digital cameras and wearable devices; and mobile computing systems, including personal digital assistants, notebook computers, universal mobile personal computers (UMPCs) and mobile internet devices. Founded in 1995, SiRF is headquartered in San Jose, California, and has sales offices, design centers and research facilities around the world. The company trades on the NASDAQ Stock Exchange under the symbol SIRF. Additional information about SiRF and its location technology solutions can be found at http://www.sirf.com.