We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
80,259 News Articles

AT&T sues Vonage over VoIP patent

More woes for internet telephony firm

AT&T has filed a lawsuit against VoIP provider Vonage, seeking damages for alleged patent infringement.

The lawsuit comes just days after Vonage settled a patent-infringement lawsuit with telecom provider Sprint Nextel.

In a filing with the US District Court for the Western District of Wisconsin, AT&T alleged that Vonage wilfully infringed an AT&T patent related to telephone systems that allow people to make VoIP calls using standard telephones.

In the legal filing, AT&T said it tried to reach an agreement with Vonage to license the patent, but failed, which forced the lawsuit.

Vonage announced on October 8 that it settled its suit with Sprint Nextel for $80m. As part of that agreement, Vonage agreed to license VoIP patents from Sprint, including more than 100 patents covering technology for connecting calls from a traditional phone network to an IP network.

Vonage is also in the process of resolving a patent infringement dispute with Verizon. Earlier this year, a court found Vonage infringed on Verizon patents and ordered an injunction that could have prevented Vonage from signing up new customers. Vonage won an injunction staying the order and is appealing the original infringement ruling. Vonage in August said it was close to rolling out workarounds for two of the three patents Verizon claimed.

Vonage is one of the largest independent VoIP providers in the US with nearly 2.5 million customers.


IDG UK Sites

iPhone 6 review: best ever iPhone is very good... but no longer the best phone you can buy

IDG UK Sites

Why Apple and Samsung, Google and Microsoft's schoolyard spats make them all look stupid

IDG UK Sites

How to successfully bridge the gap between clients and creatives

IDG UK Sites

How to update your iPhone or iPad to iOS 8: including how to install iOS 8 if you don't have room ()......