A patent interference is an administrative proceeding conducted by the USPTO in order to determine which party is entitled to a patent when two or more parties claim patent rights to the same technology… In this case, the USPTO has initially determined that Idenix is the senior party and that Pharmasset Inc. (acquired by Gilead Sciences) is the junior party.
By IDIX’s own admission, the patent in question is unrelated to IDX184, which is probably why today’s announcement is not doing anything positive for IDIX’s stock.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”