Rambus has asked the International Trade Commission to stop investigating Nvidia in regards to four patents.

The outfit said that Nvidia products do not infringe on its four patents, and also asked for termination of several claims from a fifth patent in the ITC action. Nvidia is over the moon saying it was pleased Rambus has recognised the weakness of these patents and claims.

However they are only a half of the patents and a third of the claims that Rambus has made against Nvidia so it is too early to break open the champers yet. The current ITC litigation originally included nine patents involving memory controllers related to graphics processors.

In June the U.S. Patent and Trademark Office had rejected 41 claims, in seven patents in favour of Nvidia.