Via Bloomberg:

Vonage Holdings Corp., the Internet
phone-service provider, is having its biggest single-day advance
since going public last year after it settled one of two patent
suits that threatened its survival.   
       

Vonage shares surged as much as 82 percent. Sprint Nextel
Corp., the third-largest U.S. phone company, agreed to license
more than 100 Internet telephone patents to Vonage, which will
pay $80 million to end the case and use the technology.   
       

The settlement removes one hurdle for Holmdel, New Jersey-
based Vonage, allowing it to connect Internet calls to standard
phone lines. Vonage still faces a cash shortfall that may leave
the money-losing company struggling to cover its expenses next
year, Stanford Group Co. analyst Clay Moran said.