gnosygnus writes "Xerox Corp has sued Google, Inc. and Yahoo, Inc., accusing them of infringing the document management company's patents related to Internet search. In a lawsuit filed last Friday in the US District Court in Delaware, Xerox said Google's Web-based services, such as Google Maps, YouTube and AdSense advertising software, as well as Web tools including Yahoo Shopping, infringe patents granted as far back as 2001. Xerox seeks compensation for past infringement and asked the court to halt the companies from further using the technology."Read more of this story at Slashdot.