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In Canadian copyright law there are several Limitations to Copyright. These limitations define the scope of copyright protection by placing limits on ability of copyrightholders to deny other users or creators the ability to employ the ideas, facts, and concepts underlying their protected expression. There are two major doctrinal devices employed to place limits on the scope of copyright: *Idea-expression divide(see also the related notion of Scènes à faire) *Merger Doctrine ==Justifications for the doctrinal limits on copyright== One consequence of denying the use of protected expression by means of copyright is that in the absence of some limiting doctrine copyright holders might be able to deny other users the ability not only to use their own original expression but also to deny users concepts, ideas, and facts which form the basis of the original expression. A simple example concerns the copyright of an author in a work of literature. An author who claims copyright in a specific novel can limit other users from directly reproducing the work, or copying the substance of the plot, character formation, etc... However the law of copyright will not allow the author to limit the use of, for example, the idea of traveling around a fantastical medieval land which contains fanciful creatures because to do so would limit the use of this rather stock idea to other users. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Limitations on copyrightability in Canadian copyright law」の詳細全文を読む スポンサード リンク
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