Idea Expression - Contact a Lawyer

Copyright covers the expression of an idea, not the idea itself—this is called the idea-expression divide. For example, if a book is written describing a new way to organize books in library, a reader can freely use that method without being sued and even describe it to others; it is only the particular way in which the original author described that process that is protected by copyright. One might be able to obtain a patent for the method, but that is a different subject. Compilations of facts or data may be copyrighted if the facts are selected and arranged in an original manner, though protection will only apply to wholesale copying of that selection and arrangement and not to the facts themselves.

In some cases, ideas may only be capable of intelligible expression in only one or a limited number of ways. Therefore even the expression in these circumstances is unprotected, or extremely limited to verbatim copying only. In the United States this is known as the merger doctrine, because the expression is considered to be inextricably merged with the idea. Merger is often pleaded as an affirmative defense to infringement, though some believe that it should prevent the material at issue from being copyrighted in the first place.

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Read More on Copyright law at:

• United States Copyright Office

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