Take the U.S. Copyright Law for example, so-called copyright notice usually consisting of three parts: (1) the copyright symbol c; (2) the year the work is first published; (3) the name of the copyright holder. After 1976 the U.S. Copyright Law follows the principle of protection upon completion, i.e. the work is given the copyright by the law upon its completion; no registration at any administrative body is required. There is no need for any notice such as “All rights reserved” nor is their any need for the copyright symbol c. The work is automatically put under the protection of the law. If a work published prior to 1976 does not come with the copyright notice, in principle it automatically belongs to public domain. After 1976, although the notice is no longer the necessary condition for the copyright protection, still the notice has its own merits and is easily identified. A plain copyright notice should still include these three parts: (1) a copyright symbol c, or the term “Copyright” or “Copr.”; (2) the year the work is first published; (3) the name of the copyright holder. An example is c 2002 John Doe.