Facebook roundup: Yahoo, IPO, Windows Phone, security

Yahoo files more patent claims against Facebook – Yahoo today filed two more advertising-related patent infringement claims against Facebook. Yahoo criticized the social network for purchasing patents specifically as means of retaliation against Yahoo. Facebook responded with the following statement, “We remain puzzled by Yahoo’s erratic actions. We disagree with these latest claims and we will continue to defend ourselves vigorously.”

Instagram acquisition may delay IPO – Reuters reports that Facebook’s acquisition of Instagram and recent patent purchases may delay its IPO by about a week, pushing the initial public offering to later in May.

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