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Yahoo! Files Lawsuit Against Facebook for Patent Infringement

In what may be their craziest move yet, Yahoo brought  a lawsuit against Facebook for patent infringement, according to Kara Swisher of AllThingsD. Earlier this year, Yahoo threatened a lawsuit against the social media giant, if it did not license 10 to 20 patents relating to messaging, advertising, social networking, and the personalization of websites.

Yahoo’s statement to AllThingsD:

“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. 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.”

In a statement to ZDNet, Facebook said:

“We’re disappointed that Yahoo’s effort to engage with us was limited to a few short phone calls and that we continue to learn of new developments about a long-time partner through the press. We will defend ourselves vigorously against these puzzling actions.”

The full lawsuit can be read here.