netbuzz writes “After a review, the US Patent Office has issued a preliminary finding that the Electronic Frontier Foundation calls ‘an important first step in busting a patent that stifles innovation and the use of VoIP as a free speech tool.’ (Here is the EFF’s press release.) C2 Communications has used the patent to extract one-time payments from the likes of AT&T, Verizon, and Qwest.”

Read more of this story at Slashdot.

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Preliminary Finding Invalidates VoIP Patent