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Copyright is a form of protection provided by the laws of the United States to the authors of “original works of authorship” that are fixed in a tangible form of expression. These laws offer copyright owners’ protection over how their work is reused.
An original work of authorship is a work that is independently created by a human author and possesses at least some minimal degree of creativity. A work is “fixed” when it is captured (either by or under the authority of an author) in a sufficiently permanent medium such that the work can be perceived, reproduced, or communicated for more than a short time. Copyright protection in the United States exists automatically from the moment the original work of authorship is fixed.
The copyright owner retains the sole right to:
Copyright also provides the owner of copyright the right to authorize others to exercise these exclusive rights, subject to certain statutory limitations.
Source: Copyright Basics, Circular 1, U.S. Copyright Office, available online at https://www.copyright.gov/circs/circ01.pdf
Examples of copyrightable works include:
Copyright does not protect:
Source: Copyright Basics, Circular 1, U.S. Copyright Office, available online at https://www.copyright.gov/circs/circ01.pdf
Source: Copyright Basics, Circular 1, U.S. Copyright Office, available online at https://www.copyright.gov/circs/circ01.pdf
The phrase "public domain" is commonly used to refer to works that are not protected by copyright law. Works in the public domain can be used freely, without obtaining permission from or compensating the copyright owner.
Works can enter the public domain in several ways:
It is important not to confuse public availability with public domain. Before using the work, check if the work is in the public domain. The availability of a work online has nothing to do with its copyright status.
Additionally, it is recommended, as a best practice to cite public domain works. Not citing your sources could be considered plagiarism, which can have severe professional and educational consequences.
Cornell University Library developed a Public Domain Chart which summarizes the copyright term by whether the work was registered or published. The chart also includes information specific to sound recordings and architectural works. Use of this chart is governed by the Creative Commons Attribution 4.0 License.
Sources:
Fair use is a legal doctrine that promotes freedom of expression by permitting the unlicensed use of copyright-protected works in certain circumstances. Section 107 of the Copyright Act provides the statutory framework for determining whether something is a fair use and identifies certain types of uses – such as criticism, comment, news reporting, teaching, scholarship, and research – as examples of activities that may qualify as fair use. Section 107 calls for consideration of the following four factors in evaluating a question of fair use:
In addition to the above, other factors may also be considered by a court in weighing a fair use question, depending upon the circumstances. Courts evaluate fair use claims on a case-by-case basis, and the outcome of any given case depends on a fact-specific inquiry. This means that there is no formula to ensure that a predetermined percentage or amount of a work – or specific number of words, lines, pages, copies – may be used without permission.
Source: U.S. Copyright Office Fair Use Index
Creative Commons licenses give everyone from individual creators to large institutions a standardized way to grant the public permission to use their creative work under copyright law. From the reuser’s perspective, the presence of a Creative Commons license on a copyrighted work answers the question, “What can I do with this work?”
There are six different license types, listed from most to least permissive:
CC BY
This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use.
CC BY includes the following elements:
CC BY-SA
This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. The license allows for commercial use. If you remix, adapt, or build upon the material, you must license the modified material under identical terms.
CC BY-SA includes the following elements:
CC BY-NC
This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.
CC BY-NC includes the following elements:
CC BY-NC-SA
This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator. If you remix, adapt, or build upon the material, you must license the modified material under identical terms.
CC BY-NC-SA includes the following elements:
CC BY-ND
This license allows reusers to copy and distribute the material in any medium or format in unadapted form only, and only so long as attribution is given to the creator. The license allows for commercial use.
CC BY-ND includes the following elements:
CC BY-NC-ND
This license allows reusers to copy and distribute the material in any medium or format in unadapted form only, for noncommercial purposes only, and only so long as attribution is given to the creator.
CC BY-NC-ND includes the following elements:
CC0 (aka CC Zero) is a public dedication tool, which allows creators to give up their copyright and put their works into the worldwide public domain. CC0 allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, with no conditions.