An anonymous reader writes with an excerpt from an article over at ZD Net: "As expected, Yahoo today filed a patent infringement lawsuit against Facebook. The online giant is claiming the social networking giant infringes on 10 of its patents. Yahoo is hoping to secure some portion of Facebook's revenues moving forward. 'Yahoo! has invested substantial resources in research and development through the years, which has resulted in numerous patented inventions of technology that other companies have licensed,' a Yahoo spokesperson told AllThingsD. 'These technologies are the foundation of our business that engages over 700 million monthly unique visitors and represent the spirit of innovation upon which Yahoo! is built. Unfortunately, the matter with Facebook remains unresolved and we are compelled to seek redress in federal court. We are confident that we will prevail.'"