ASCII Character ©Copyright sign
The copyright symbol, or copyright sign, © (a circled capital letter C for copyright), is the symbol used in copyright notices for works other than sound recordings. The use of the symbol is described by the Universal Copyright Convention. The symbol is widely recognized but, under the Berne Convention, is no longer required in most nations to assert a new copyright. Because the © symbol is not available on typical typewriters or in ASCII, it has long been common to approximate this symbol with the characters (c) (c in parentheses), a practice that has been accepted by the U.S. Copyright Office. The character is mapped in Unicode as U+00A9 © COPYRIGHT SIGN. Unicode also has U+24B8 Ⓒ CIRCLED LATIN CAPITAL LETTER C and U+24D2 ⓒ CIRCLED LATIN SMALL LETTER C, which have an appearance similar to the character.