Luck's Music Library, Inc. v. Ashcroft, Civil Action No. 01-2220 (N.D. N.C. June 10, 2004), discusses and upholds the constitutionality of the copyright restoration act, allowing retroactive copyright protection to remove works from the public domain.  It is interesting to consider this case in conjunction with Larry Lessig's recent book, Free Culture, previously cited.  Free Culture is available for free download for non-commercial purposes here.   more »