Global Sources
EE Times-Asia
Stay in touch with EE Times Asia
EE Times-Asia > RF/Microwave

Judge affirms SiRF's patent infringement

Posted: 12 Aug 2008 ?? ?Print Version ?Bookmark and Share

Keywords:patent? wired? wireless? GPS? infringement?

The pending case whether SiRF has infringed some patents of Broadcom Corp. is over. The U.S. International Trade Commission (ITC) judge has ruled that SiRF Technology Holdings Inc. has infringed six patents related to improving GPS processing and sensitivity. The patents are under the custody of Global Locate Inc., a wholly owned subsidiary of Broadcom.

The Initial Determination containing the infringement articles followed a trial earlier this year. A Final Determination by the full six-person Commission will be prepared by early December.

The infringement findings include an array of SiRF products, covering the SiRFstarIII and SiRFInstant GPS architectures.

Carl Charneski, administrative law judge, ITC, ruled in favor of Broadcom based on an earlier June ruling by another ITC judge, who dumped SiRF's allegations that two patents have been infringed by Broadcom.

"We are happy to know that Broadcom prevailed in two separate patent cases ruled by two different ITC judges in favor of our position that SiRF infringes our intellectual property (IP) and that we did not infringe their patents," said David Rosmann, VP, IP litigation, Broadcom.

Infringed patents
The six patents that SiRF infringed were U.S. patents 6,417,801; 6,937,187; 6,606,346; 7,158,080; 6,704,651; 6,651,000relating to extended ephemeris assistance (Long Term Orbits technology), calculated time in GPS receivers, enhanced sensitivity in assisted GPS systems, and in implemented hardware structures for parallel correlation.

SiRF's other patent battles
Aside from the infringement cases against SiRF in the ITC, both Broadcom and Global Locate also filed a case against SiRF in the U.S. District Court in Santa Ana, California, in two separate filings. These include infringement claims of the four patents filed in January 2007 and the other four additional patents that deal with SiRF's multimedia processors and GPS receivers, filed in May 2008.

Resolving conflicts
The May case came after Broadcom attempts to end all patent disputes between its subsidiary, Global Locale and SiRF, which earlier filed a case against Global Locate in ITC and U.S. District Court.

"Before the ITC trials, we had been looking forward to cooperatively resolve the differences of the companies. When everything turned out to be hopeless, we have to take legal means to protect our IP rights. We are keeping our lines open for a mutual resolution to these disputes," Rosmann stressed.

Article Comments - Judge affirms SiRF's patent infringe...
*? You can enter [0] more charecters.
*Verify code:


Visit Asia Webinars to learn about the latest in technology and get practical design tips.

Back to Top