The New York Times: Yahoo is trying to force Facebook to pay for licenses on ten to twenty patents that cover key personalization, social networking and messaging technologies. The two companies met on Monday to discuss the issue. A Yahoo spokesperson noted, "Yahoo has a responsibility to its shareholders, employees and other stakeholders to protect its intellectual property. We must insist that Facebook either enter into a licensing agreement or we will be compelled to move forward unilaterally to protect our rights."
When asked for a response, Facebook said that it is still evaluating Yahoo's claims.