What is the period of validity of a copyright?
Term of copyright in published literary, dramatic, musical and artistic works (other than a photograph) published within the lifetime of the author is sixty years from the beginning of the calendar year next following the year in which the author dies. In case of anonymous and pseudonymous works also it is sixty years following the year in which the work is first published. Where the identity of the author is disclosed before the expiry of the said period, copyright shall subsist following the year in which the author dies. Term of copyright in posthumous work in the case of a literary, dramatic or musical work or an engraving, but which, or any adaptation of which, has not been published before the date of death of the author, copyright subsists until sixty years from the beginning of the calendar year next following the year in which the work is first published or, where an adaptation of the work is published in any earlier year, from the beginning of the calendar year next following
