Is Intelligent Design a defeated argument?

In October 2004, the Dover Area School District of York County, Pennsylvania, changed its biology teaching curriculum to require that intelligent design be presented as an alternative to evolution theory, and that Of Pandas and People, a textbook advocating intelligent design, was to be used as a reference book. The plaintiffs successfully argued that intelligent design is a form of creationism, and that the school board policy violated the Establishment Clause of the First Amendment to the United States Constitution. (Source: Wikipedia)

The truth about the Dover Intelligent Design Trial