Copyright protection is automatic, there is no special action required to copyright a play. As soon as a work of sufficient originality is "fixed in a tangible medium, perceptible to human eye, machine reader or other device". There is no requirement to register or to display a copyright notice for a work to be protected.
The written work is automatically protected by copyright.
Copyright in both the play and the film was renewed, so the play will be protected through 2034, and the film through 2036.
The play is copyright 1979, Peter Shaffer. Copyright of the 1984 movie version would likely belong to the production company. To perform the play, you would almost certainly need permission from a performing rights organization.
1955.
Development of automobiles was affected more by patent than copyright.
No, unfortunately.
no.
Yes you do.
With permission of the copyright holder, yes.
With a license from the copyright holders, yes.
The book has a copyright. The music has a copyright. The musical production has copyright. The movie has a copyright. The sound track has a copyright. Music not used in the movie has copyright. The play was first produced on Broadway in 1957, meaning it is copyrighted until 95 years later. The movie was produced in 1962 and has 95 years of copyright. The sound recordings of the music produced prior to 1973 have no federal copyright but are protected by state laws until 2067, not including those works that were also part of the 1962 dramatic audiovisual work, which are covered by federal copyright for 95 years.
They were required to implement technology to interpret copyright protection information and to prohibit playing unauthorized copies.