Xerox has taken search giants Google and Yahoo to court, alleging the companies are infringing on its search patents owned by the document management company.
The document management company has filed suit in the US, stating that services such as Google Maps, YouTube, AdSense and Yahoo Shopping all abuse patents dating back as far as 2001, Reuters said.
The company is seeking damages for past infringement and an injunction on further use of the technology.
Yahoo and Google have both rejected the Xerox claims, and pledged to defend themselves in court.
The patents cover a system for generating queries for information in a document, and methods for integrating information from documents and external data.