Complaint Filed in California's Central District Alleges Infringement of Three SiRF GPS Technology Patents

SAN JOSE, Calif., August 8  -- SiRF Technology, Inc., a wholly owned subsidiary of SiRF Technology Holdings, Inc. (NASDAQ: SIRF) , a leading provider of GPS-enabled location technology, announced today that it has filed a complaint against u-Nav Microelectronics in the United States District Court for the Central District of California. SiRF's complaint alleges infringement by u-Nav of three of SiRF's GPS technology patents: U.S. Patent Nos. 6,297,771; 6,496,145; and 6,526,322. SiRF's complaint requests an award of both monetary damages and an injunction to prevent further infringement.

"Today's suit reflects our determination to protect our intellectual property," said Nicolas S. Gikkas, Chief Intellectual Property Counsel. "SiRF has a responsibility to its stockholders and employees to protect the intellectual property developed or acquired at great expense by the company. SiRF intends to ensure that its intellectual property is respected by those in the GPS business and is used only by those authorized to do so. Since u-Nav did not respond to our invitation to resolve this matter outside the courts, SiRF believes it is necessary to seek legal redress."

About SiRF Technology

SiRF Technology, Inc. is a wholly owned subsidiary of SiRF Technology Holdings, Inc. and is a leading supplier of GPS enabled location technology for high-volume mobile consumer devices and commercial applications. SiRF's technology has been integrated into mobile consumer devices, such as automobile navigation systems, mobile phones, PDAs, GPS-based peripherals and handheld GPS navigation devices, and into commercial applications, such as asset tracking devices and fleet management systems. SiRF markets and sells its products in four target platforms: automotive, consumer electronics, mobile computing and wireless devices. Founded in 1995, SiRF is headquartered in San Jose, California, and has sales offices, design centers and research facilities around the world. SiRF Technology Holdings, Inc. trades on the NASDAQ Stock Exchange under the symbol SIRF. Additional information about SiRF and its location technology solutions can be found at www.sirf.com.

Forward-Looking Statements:

Except for the historical information contained herein, the matters set forth in this press release, including, but not limited to, statements regarding the complaint filed by SiRF, the anticipated benefits of asserting the SiRF patents, and SiRF's intent to ensure that its intellectual property is used only by those authorized to do so and are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as "intend," "believe," "seeks," and similar expressions are intended to identify forward-looking statements. These statements are not guarantees of future performance and should not be considered as an indication of future performance. SiRF's actual results could differ materially from those discussed in these forward-looking statements as a result of risks and uncertainties, including, among others, our ability to protect our intellectual property, including our patents and other proprietary rights, and other risks and uncertainties discussed in the Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2005 and from time to time in SiRF's SEC reports These forward-looking statements speak only as of the date hereof. We do not undertake any obligation to update forward-looking statements.