USPTO Wipes Out Key Rambus DRAM Patent

By Erin Coe

Law360, San Diego (January 27, 2012, 10:54 PM ET) -- The U.S. Patent and Trademark Office on Tuesday invalidated another Rambus Inc. patent that has been at the center of the technology licensing firm’s victories at the U.S. International Trade Commission.

The USPTO's Board of Patent Appeals and Interferences rejected Rambus’ U.S. Patent Number 6,591,353, one of the so-called Barth patents that covers a method and apparatus for controlling data transfers to and from dynamic random access memory, in a re-examination proceeding initiated by Nvidia Corp. The board reversed an examiner’s finding that 26 claims were...
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