Google Wins Invalidation Of Walker Digital Patent Claims

By Allissa Wickham (September 3, 2014, 8:32 PM EDT) -- A Delaware federal judge on Wednesday handed victory to Google Inc. in an infringement suit brought by Walker Digital LLC over two anonymous communication patents, ruling their asserted claims were invalid because they could be performed using routine mental steps.

Granting summary judgment to Google, U.S. District Judge Leonard P. Stark ruled that the independent claim and several dependent claims of Walker Digital's two asserted patents, listed as U.S. Patent Numbers 5,884,270 and 5,884,272, were invalid because of a lack of patentable subject matter, as they could be performed mentally.

"To allow the claim to survive would disproportionately risk preempting a...

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