Copyright

Copyright is mostly holding back sharing, but it can also be used to enforce sharing, as is the case with copyleft.

Definition
Copyright is the set of exclusive rights granted to the author or creator of an original work, including the right to copy, distribute and adapt the work. These rights can be licensed, transferred and/or assigned. Copyright lasts for a certain time period after which the work is said to enter the public domain. Copyright applies to a wide range of works that are substantive and fixed in a medium. Some jurisdictions also recognize "moral rights" of the creator of a work, such as the right to be credited for the work. (Read More)

More Info

 * A list of countries and the lenght of copyright
 * List_of_countries'_copyright_length