The patent, held by a small company called C2 Communications Technologies, is one of 10 that the Electronic Frontier Foundation (EFF) has been trying to strike down for several years through its Patent Busting Project. [spam URL stripped] On Friday, the patent office granted the EFF's request for a re-examination, the EFF said. The digital civil-liberties organization argued that another applicant had submitted basically some of the same technology to the patent office before C2 did. Patent No. 6,243,373, [spam URL stripped]"Method and apparatus for implementing a computer network/Internet telephone system," is credited to David L. Turock as inventor and is owned by C2, previously called Acceris Communications Technologies."
Link to Original Source