IP Verse

Sonus Networks competitive analysis

Discover the latest PTAB cases involving Sonus Networks, highlighting their recent legal challenges and patent disputes.

Last updated on: Feb 20, 2026

Proceeding Number	Filing Date	Petitioner	Respondent	Status
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IPR2019-00395	Dec 5, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled
IPR2019-00396	Dec 5, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled
IPR2019-00272	Nov 12, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled
IPR2019-00273	Nov 12, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled
IPR2019-00051	Oct 17, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled
IPR2019-00052	Oct 17, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled
IPR2018-01719	Sep 20, 2018	METASWITCH NETWORKS	SONUS NETWORKS	Terminated-Settled

IP litigation analysis comparing Sonus Networks with top 3 competitors. Includes complete PTAB case data and opposition data from 2018 onwards.

Last updated on: Feb 19, 2026

Company	Oppositions Filed	Oppositions Faced	PTAB Cases Filed	PTAB Cases Faced
SONUS NETWORKS	-	-	-	7
METASWITCH NETWORKS	-	-	9	4