In Pictures: The fierce battle for intellectual property

Microsoft, Motorola, Oracle and Google, Facebook and many others are fighting for a piece of righteous intellectual property pie

Yahoo is accusing Facebook of copying a range of technologies that the flagging search company invented, in a lawsuit that alleges the social media giant infringes 10 patents. "Facebook's entire social network model, which allows users to create profiles for and connect with, among other things, persons and businesses, is based on Yahoo's patented social networking technology," Yahoo wrote in the lawsuit filed in March.

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