The U.S. International Trade Commission (ITC) has upheld an earlier decision that favors Nokia in a patent case filed against it by wireless technology company InterDigital.
Nokia hasn't infringed on patents belonging to InterDigital, a U.S. ITC judge ruled in August. InterDigital disagreed with the decision and called for the full Commission to review the case. The Commission has now concluded that the patents were not infringed by the phone manufacturer's products.
The Commission also withdrew the portion of the so-called Initial Determination that had found the patents valid, Nokia said in a statement on Saturday.
The case, started in August 2007, concerns four patents related to the UMTS (Universal Mobile Telecommunications System) mobile standard.
Interdigital hasn't, despite the setbacks, given up. The company is still convinced its case against Nokia has merit, and is considering a number of options in response to the Commission's decision, according to a statement put out on Friday that doesn't detail what those options might be.
Legal proceedings between Nokia and InterDigital have been a drawn out process. In July last year the two companies agreed to end two legal actions in U.K. courts, which started when Nokia sued InterDigital in July 2005. Details of the agreement were confidential between the parties.