www.smartire.com/investors/faq Patent Infringement Lawsuit.
On Sept. 13, 2007, SmarTire Systems filed a legal complaint against Siemens VDO Automotive Corp. and Schrader-Bridgeport International, Inc.
www.smartire.com/investors/news For a little more info.
The website has change a couple of time since 2007, that I know of. They used to have a few audio files taken from one of the few shareholder meeting they had. Everything that's posted on the web is forever. You might want to try Internet Archive Wayback Machine to extract information that doesn't show up on Smartires website.
Hope this helps you some.