BrynM writes "According to an opinion published today (PDF), the RIAA has lost its case against Charter Communications regarding subpoenas for the cable ISP's users to be identified for copyright infringement in the Eastern District of Missouri. You may remember that Charter Communications filed a motion to block the RIAA's subpoena back in late 2003. Now Charter has prevailed. Here's the blurb from the Court 'Civil case - Digital Millennium Copyright Act. District court erred in issuing subpoenas on internet providers to obtain personal information about the providers' subscribers who were alleged to be transmitting copyrighted works via the internet through peer-to-peer programs; the internet providers' function was limited to acting as a conduit for the allegedly copyrighted material, and Section 512(h) of the Act does not authorize subpoenas in such circumstances; case remanded with directions. Dissent by Judge Murphy. [PUBLISHED] [Bye, Author, with Murphy and Bright, Circuit Judges]'"