[citation][nom]twinclouds[/nom]The service was started by GrandCentral Communications, which was bought by Google in 2007, if I remember correctly, then become Google Voice Beta. Thus, this service is at least existed for over 3 three years. A patent usually is considered it is valid at the time it is filed, not the time issued. However, if you check the patent, it was only filed on September 1, 2009. (BTW, it is super fast for a patent to be issued within a year.) In any case, I don't know how this patent is valid against Google.[/citation]
This is close, its actually based on a reasonable date you can prove that you came up with the idea.