Nvidia wins round in Rambus patent spat

The U.S. Patent and Trademark Office (USPTO) has initially rejected additional eight claims challenged by Nvidia in two patents that Rambus has asserted against it in litigation. This follows the USPTO's rejection last month of 41 other claims in seven patents that Rambus had asserted against Nvidia.

"We are pleased that the USPTO decided to review the patentability of these two additional Rambus patents and continued to agree with NVIDIA's challenge to these eight claims," said David Shannon, Nvidia executive VP and general counsel. "The USPTO has now initially rejected all of the patent claims asserted by Rambus against Nvidia in the ITC."

The ITC litigation involves memory controllers related to graphics processors.