Alan,
Often, the "copyright" for a movie is very, well, let's say, complicated.
There could easily be separate copyrights for:
*The original story/script
*The screenplay (which may be considered a derivative work?)
*The sound recording
*The video image
*Any pre-existing material CONTAINED...
A couple of quick things. I work for a copyright management company in Indiana. We deal with copyrighted songs primarily, but I believe the same rules apply to all copyrights.
The copyright term was extended by 20 years in 1998 (The Sonny Bono Copyright Extension Law). So, for works that...