Press Release

Ribbon Continues to Enforce its Valuable Intellectual Property Rights, Undeterred by Metaswitch's Baseless Attacks

November 26, 2018
Metaswitch's latest lawsuit is yet another attempt to avoid payment for its wrongful use of Ribbon's Intellectual Property

WESTFORD, Mass., Nov. 26, 2018 /PRNewswire/ -- Ribbon Communications Inc. (Nasdaq: RBBN), a global leader in secure and intelligent cloud communications, responds today to Metaswitch's latest litigation tactic to try to avoid payment for its use of Ribbon's intellectual property. 

(PRNewsfoto/Ribbon Communications)

Ribbon has and will continue to seek help from the courts to receive compensation for Metaswitch's widespread use of Ribbon's trade secrets and patented technology. Ribbon originally filed a patent lawsuit against Metaswitch in 2014, and that suit resulted in a jury verdict finding that Metaswitch infringed seven Ribbon patents and owed damages to Ribbon. In a follow-on lawsuit, Ribbon contends that, despite the jury verdict, Metaswitch continues to use Ribbon's patented technology and owes damages for that ongoing use. Ribbon also contends, in a separate lawsuit pending in Texas state court, that Metaswitch has been engaged in an orchestrated campaign to steal and use Ribbon's trade secrets, and that lawsuit is set for trial in April 2019. In March 2018, Ribbon brought two other patent lawsuits based on Metaswitch's unauthorized use of ten additional Ribbon patents.

Metaswitch's most recent lawsuit against Ribbon, under the guise of antitrust violations, attacks Ribbon for bringing suits to protect Ribbon intellectual property rights, even though the Supreme Court has made clear that such suits are protected by the First Amendment and immune from antitrust scrutiny.  Metaswitch's lawsuit also rehashes allegations that it previously lost in federal court and complains of a Ribbon merger that the federal government already cleared from an antitrust perspective. Ribbon defeated Metaswitch's claims in earlier cases, including Metaswitch's claims alleging that Ribbon infringed Metaswitch patents, and Ribbon will vigorously defend itself against Metaswitch's latest claims.

Franklin "Fritz" Hobbs, Ribbon's Chief Executive Officer, stated, "It is disappointing that Metaswitch is attempting to relitigate claims that it already lost in federal court. Ribbon will not be deterred by these actions, and we look forward to having Ribbon's intellectual property rights vindicated and Metaswitch finally paying for its misappropriation of Ribbon technology."

About Ribbon Communications
Ribbon Communications is a company with two decades of leadership in real-time communications. Built on world-class technology and intellectual property, the company delivers intelligent, secure, embedded real-time communications for today's world.  The company transforms fixed, mobile and enterprise networks from legacy environments to secure IP and cloud-based architectures, enabling highly productive communications for consumers and businesses.  With a global footprint, Ribbon's innovative, market-leading portfolio empowers service providers and enterprises with rapid service creation in a fully virtualized environment.  The company's Kandy real-time communications software platform delivers a comprehensive set of advanced embedded and unified (CPaaS and UCaaS) communications capabilities that enables this transformation. To learn more, visit

Important Information Regarding Forward-Looking Statements
The information in this release contains forward-looking statements regarding future events that involve risks and uncertainties, including statements regarding delivering value to customers. All statements other than statements of historical facts contained in this release are forward-looking statements. Our actual results may differ materially from those contemplated by the forward-looking statements. For further information regarding risks and uncertainties associated with Ribbon Communications' business, please refer to the "Risk Factors" section of Ribbon Communications' most recent annual or quarterly report filed with the SEC. Any forward-looking statements represent Ribbon Communications' views only as of the date on which such statement is made and should not be relied upon as representing Ribbon Communications' views as of any subsequent date. While Ribbon Communications may elect to update forward-looking statements at some point, Ribbon Communications specifically disclaims any obligation to do so.

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