<unk>  comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction. This body of information and creativity is considered to be part of a common cultural and intellectual heritage, which, in general, anyone may use or exploit, whether for commercial or non-commercial purposes. About 15 percent of all books are in the<unk> , including 10 percent of all books that are still in print.
If an item ("work") is not in the<unk> , it may be the result of a proprietary interest such as a copyright, patent, or other sui generis right. The extent to which members of the<unk>  may use or exploit the work is limited to the extent of the proprietary interests in the relevant legal jurisdiction. However, when the copyright, patent or other proprietary restrictions expire, the work enters the<unk>  and may be used by anyone for any purpose.
Public domain
Hybrid open access journal
Designer drug
Delayed open access journal
Lethal dose
Drug Discovery Today
Prevention template
International Nonproprietary Name