Court
The formal notice consisting of the copyright symbol (or word, copyright), plus the date of publication and the owner’s name, placed on published copies of a copyrighted work. for works published in the u.s. after march 1, 1989, copyright notice is not required. a notice is still useful to remind others that the work is copyrighted, to steer a would-be user in the right direction to obtain permission, and to preclude a defense of “i didn’t know it was copyrighted” if someone uses the copyrighted material without permission. (see also: published work)