Charles Knight, who is now the Search Editor at Nextweb pointed me to a Bloomberg report at BusinessWeek, Google, Yahoo Sued by Xerox Over Search Query Patents.
The patent infringement complaint (PDF – 308k) contains claims that specifically name the following programs as infringing Xerox’s patented technology: Google’s Adsense and Adwords programs, Google Maps, Google Video, and YouTube, as well as Yahoo’s Search Marketing and Publisher Network, Y!Q Contextual Search, and Yahoo Shopping.
The article provided descriptions of the Xerox patents in question, but didn’t identify the patents themselves. While I was able to find one of the two patents from a search at the patent office, the other patent eluded me. I registered with, and signed on to the Federal Government’s PACER (Public Access to Court Electronic Records) system to look at the complaint and find the other patent.
Xerox filed the case in federal court in Wilmington, Delaware on February 19th, and asks the Court for cash damages and an order that would keep Google, Yahoo, and YouTube from continuing to “use” the technology described under the patents in question, without permission.