The World Intellectual Property Organization (WIPO) was created in 1967 by the United Nations to promote innovation and creativity and protect property rights across different countries.
Intellectual property (IP) refers to creations of the mind, such as inventions; literary and artistic works; designs; and symbols, names and images used in commerce.
By law, when something is written, drawn, photographed, etc., its copyright is automatically owned by the author. In other words, a copyright exists at the moment the work is created.
You don't have to register with the US Copyright Office to have copyright protection but it helps.
Creative Commons helps you legally share your knowledge or work. With a creative commons license, you can indicate how others can use your ideas.
Public domain is a designation for content that is not protected by any copyright law or other restriction and may be freely copied, shared, altered and republished by anyone. The designation means, essentially, that the content belongs to the community at large