Yahoo patents granted on 16 April 2013

7 US patents granted on 16 April 2013 and assigned to Yahoo

1 8,423,603 Providing real time information in a visual information unit
2 8,423,558 Targeting online ads by grouping and mapping user properties
3 8,423,543 System and method to determine the validity of an interaction on a network
4 8,423,479 Trusted third party clearing house for lead tracking
5 8,423,409 System and method for monetizing user-generated web content
6 8,423,003 System for serving targeted advertisements over mobile messaging services
7 8,422,731 System, method, and apparatus for video fingerprinting