How long does a copyright protection last on a book?
New works are protected for the life of the author plus 50 years in most countries (the US has extended this to 70 years).
Copyright protection is automatic and instantaneous, as soon as work of sufficient originality is "fixed in a tangible medium, perceptible to human eye, machine reader or other device". It isn't necessary to take any action to copyright a book, movie, song, etc. If you decide that you want or need the additional protection that a formally registered copyright will provide, contact the copyright office in your country for the proper procedure and fee amounts.
Copyright law does not treat film differently from any other form of intellectual property. As long as it meets the criteria necessary for copyright protection no special action is necessary for copyright protection to exist. If you do decide that you want or need the additional protection a formally registered copyright can provide, contact the copyright office in your country for the proper procedure and required fees.
If a book is out of copyright can you post a long cited interpretation without worry and what if it goes back to copyright?
For materials published prior to 1923, protection has expired. Any type of re-publication and distribution (such as posting a long excerpt) is permitted. There is no mechanism in place for materials to revert to a protected state once protection has expired. For information on the restoration of protection of Soviet works under GATT, see the related link.
Under most jurisdictions copyright protection exists as soon as a work of sufficient originality is fixed in a tangible medium perceptible to human eye, machine, or device. Although there are some exceptions (work-for-hire) copyright protection normally extends to the end of the calendar year, 70 years past the death of the original author
No, in most countries as long as a work is of sufficient originality and is "fixed in a tangible medium, perceptible to human eye, machine reader or other device"then copyright protection is automatically in force. There are additional layers of protection available with formal registration however.
How long a song is protected by copyright, before becoming public domain, depends on when the song was first published. For songs published between 1923 and 1963, copyright can last as long as 95 years. Later songs tend to be protected for considerably longer, as the term of protection is for the life of the creator plus at least 50 years; the US and several other countries have extended this to life plus 70 years.
As long as there is no copyright protection for a source you do not need to cite it if you use it in a paper?
It depends on the circumstances. Works published or registered before 1978 currently have a maximum copyright duration of 95 years from the date of publication, if copyright was renewed during the 28th year following publication. If a work was created prior to 1978 but not published until recently copyright protection may extent to 2047. As a sidenote works published before 1923 are in the public domain as are works created before 1964 & not properly…
Copyright protection consists of five basic rights (distribution, display, duplication, performance and creation of derivatives) that allow the creator of an original work to control how, where, and by whom it is used. Copyright law protects original works of authorship including (but not limited to) literary, dramatic, musical, and artistic works. It can include poetry, novels, movies, songs, computer software, and architecture. Under current US law the term of copyright protection extends to the end…