The Supreme Court in case of R.G. Anand Vs. Delux Films and Others, has clearly held that as a violation of copyright amounts to an act of piracy it must be proved by clear and cogent evidence after applying the various tests. Para 46 of the report states as under:–

“46. Thus, on a careful consideration and elucidation of the various authorities and the case law on the subject discussed above, the following propositions emerge:

  1. There can be no copyright in an idea, subject-matter, themes, plots or historical or legendry facts and violation of the copyright in such cases is confined to the form, manner and arrangement and expression of the idea by the author of the copyright work.

  2. Where the same idea is being developed in a different manner, it is manifest that the source being common, similarities are bound to occur. In such a case the courts should determine whether or not the similarities are on fundamental or substantial aspects of the mode of expression adopted in the copyrighted work. If the defendant’s work is nothing but a literal imitation of the copyrighted work with some variations here and there it would amount to violation of the copyright. In other words, in order to be actionable the copy must be a substantial and material one which at once leads to the conclusion that the defendant is guilty of an act of piracy.

  3. One of the surest and the safest test to determine whether or not there has been a violation of copyright is to see if the reader, spectator or the viewer after having read or seen both the works is clearly of the opinion and gets an unmistakable impression that the subsequent work appears to be a copy of the original.

  4. Where the theme is the same but is presented and treated differently so that the subsequent work becomes a completely new work, no question of violation of copyright arises.

  5. Where however apart from the similarities appearing in the two works there are also material and broad dissimilarities which negative the intention to copy the original and the coincidences appearing in the two works are clearly incidental no infringement of the copyright comes into existence.

  6. As a violation of copyright amounts to an act of piracy it must be proved by clear and cogent evidence after applying the various tests laid down by the case law discussed above.

  7. Where, however, the question is of the violation of the copyright of stage play by a film producer or a Director the task of the plaintiff becomes more difficult to prove piracy. It is manifest that unlike a stage play, a film has a much broader perspective, wider field and a bigger background where the defendants can by introducing a variety of incidents give a colour and complexion different from the manner in which the copyrighted work has expressed the idea. Even so, if the viewer after seeing the film gets a totality of impression that the film is by and large a copy of the original play, violation of the copyright may be said to be proved.”