SmarTire Systems Inc. announced today that it has filed a complaint against Siemens VDO Automotive Corp. and Schrader-Bridgeport International, Inc. in the United States District Court for the Eastern District of Virginia alleging infringement of its United States Patent No. 5,231,872, entitled “Tire Monitoring Apparatus and Method.” The case is SmarTire Systems, Inc. v. Siemens VDO Automotive Corp. and Schrader-Bridgeport International, Inc., Civil Action No. 1:07cv932 SmarTire develops and markets proprietary advanced wireless sensing and control systems worldwide under the SmartWave trademark. The company has invested more than $100 million in R&D for its patented tire monitoring technology. It developed numerous patent-protected wireless technologies and has advanced tire monitoring solutions since 1987.