There are some variations of the copyrights laws among different countries that are signatory of the Berne convention, some laws give more protection in some points and some laws give less protection at other points. There are variations about the time for copyrights, the non comercial use, and others. With trademarks is worst and with patents is even worth, because many patents are not accepted or recognized. The law that prevails is the local law above any kind of external law, convention or agreement.

Stupidity also evolves!