Microsoft Files U.S. Antitrust Lawsuit Against Interdigital

Microsoft Corp. filed a lawsuit claiming InterDigital Inc. has been violating its pledge to offer fair and reasonable licenses on patents related to fundamental mobile-phone technology

The antitrust lawsuit was filed Thursday in federal court in Wilmington, Delaware, a week before a U.S. trade agency is scheduled to rule on a long-running dispute in which InterDigital is seeking royalties on Microsoft-made Nokia phones.