Patent 7,139,761 (the '761 patent) has been asserted by Leader Technologies, Inc. against Facebook, Inc. in a federal district court action alleging willful infringement. The '761 patent could pose a threat to numerous social network sites. This challenge is to determine whether the claims of the '761 patent are valid.

WHAT'S NEEDED: REQUEST FOR INFORMATION

Prior Art

Patents and Published Patent Applications Filed in the U.S. Prior to December 10, 2002

December 9th, 2008

This patent application was filed on December 10, 2003, resulting in an earliest date of invention of December 10, 2002. While it is possible that the invention did not occur until after December 10, 2002, finding relevant prior art before that date assures it application. Such prior art may include patent issued before December 10, 2002, and/or published patent applications that were filed in the U.S. prior to December 10, 2002.
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