In general, the following types of works cannot be copyrighted:
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Ideas, Procedures, Methods, or Systems: Copyright protects the expression of ideas, not the ideas themselves. For example, you cannot copyright a concept for a new invention.
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Facts and Data: Facts, statistics, and common knowledge cannot be copyrighted. This includes information that is widely known or that has been published in the public domain.
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Works of the U.S. Government: In the United States, works created by federal government employees as part of their official duties are not eligible for copyright protection.
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Public Domain Works: Any work that is in the public domain cannot be copyrighted. This includes works that have either never been copyrighted or whose copyright has expired.
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Short Phrases and Titles: Single words, names, titles, and short phrases (such as slogans) generally cannot be copyrighted.
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Functional Objects: Items that have a utilitarian function (like a chair design) are usually covered by patent law, not copyright law.
If you have a list of specific options to choose from, please provide it for a more tailored response!