The SCO Group was, in 2004, involved in a dispute with various Linux vendors and users. In this campaign SCO "announced that Linux contained SCO's UNIX System V source code and that Linux was an unauthorized derivative of UNIX". Although many are skeptical about their claims, SCO initiated a series of lawsuits and claims that so far have not been upheld by the courts. Thus far the impact on both Linux and Unix has been minimal. While making numerous public assertions that Linux infringes upon their copyrights, the lawsuits themselves concern contractual issues which are tangential to the issue of whether or not Linux infringes any copyrights. Further complicating the issue is the legitimacy of SCO claims concerning the ownership of System V Release 4.0 (SVR4) Unix copyrights. The success or failure of the claims will also have a profound effect on the financial future of The SCO Group, itself. SCO has, to date, made little headway in this dispute. In particular, in , Judge Dale Kimball, the judge in the "SCO v. IBM" case has stated: