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Copyright > How Do I Qualify for and Obtain Copyright Protection? - Pg. 141

A Primer on Intellectual Property 141 languages, ports to other platforms, sequels, projects in other media based on the original copyright, and user-generated "mods" (discussed below in the "Protecting Your Assets: Enforcement: Mods" section). Each of these derivative works needs its own protection, but the right to make them is controlled by the holder of the original copyright. Copyrights are also available for compilations of other work where there is some level of authorship in the selection and placement of the work. For example, a collection of public domain games from the late 70s may be copyrighted. The compilation copyright would not grant the compiler a copyright to the games , only to that specific selection and order of the games, thus preventing another person from issuing the exact same collection. Infringement Unauthorized use of a copyrighted work is known as infringement and the owner may sue the in- fringer for damages (money) and/or an injunction (prohibiting the infringer from continuing the in- fringing activity). Copyrights should be registered with the Copyright Office ( to have the greatest power against infringers. Without registration, every creator of a copyrightable work (who is not under a work-for-hire or invention assignment agreement) has what is known as a natural copyright in that work and may affix the © notation to the work, but natural copyrights are difficult to prove and enforce against an infringer, and the Copyright Act awards greater damages for registered copy- rights. Idea versus Expression Copyrights can be flimsy protection because, unlike trade secrets or patents, they can protect only the expression of an idea, not the idea itself. Methods, applied mathematical formulae, applied algorithms--none of these can be protected with a copyright, only the actual code embodying those