4 known cases. View patent page →
First Federal Circuit appeal from the Genband/Metaswitch district court case. The Federal Circuit vacated the district court's denial of a permanent injunction and remanded for reconsideration of the irreparable-harm standard.
Mirror-image Eastern District of Texas case brought by Metaswitch against Genband and Genband Management Services. Trial ended March 17, 2016 with no damages awarded to either party; final judgment on April 14, 2016 awarded Genband costs as prevailing party. The patents-in-suit did not center on the '971 Patent.
Sonus Networks sued Metaswitch entities in the Eastern District of Texas, asserting the '971 Patent among other patents. The case was settled and dismissed with prejudice on July 1, 2019. The narrative notes conflicting filing dates (March 8, 2018 per SEC disclosure; April 18, 2018 per docket summary).
Second Federal Circuit appeal listed on the '971 Patent's litigation record, filed in 2018. The narrative could not confirm the specific parties, the order on appeal, or the outcome.