AMD has filed a suit to release sealed evidence from Intel's dispute with Intertrust to EU antitrust investigators.
The request, filed in the Northern California District Court in San Jose, will be heard on November 12. The Integraph dispute was settled two years ago with the judge ruling in Intel's favour.
Intel has responded by saying that the items contain trade secrets and that US law doesn't permit such trawling.
In April the EU said it was investigating Intel marketing practice after two complaints, from AMD and Via. Investigators had been alerted to rebates available under the Intel Inside program, under which OEMs receive marketing collaterol in return for agreeing not to use a competitor's chips. Both AMD and Intel run similar programs.