Seems soen.wikipedia.org/wiki/Berne_Convention_for_the_Protection_of_Literary_and_Artistic_Works
"Copyright under the Berne Convention is automatic: no registration is required, nor is the inclusion of a copyright notice."
(,
Thu 22 Sep 2005, 17:30,
archived)
"Copyright under the Berne Convention is automatic: no registration is required, nor is the inclusion of a copyright notice."