[hmage]

This source covers only US copyright law, not EU copyright law, not UK copyright law, not Russian copyright law, not Canadian copyright law, etc.

[M2Ys4U]

Article 5(2) of the Berne Convention:[0]

"The enjoyment and the exercise of these rights shall not be subject to any formality"

[0] https://en.wikisource.org/wiki/Convention_for_the_Protection...