Quando scadono i diritti di un personaggio di un fumetto?

[Mister C]

Conan il Barbaro

[Largand]

Conan il Barbaro

Credo che invece nasceranno problemi.
Il Pubblico Dominio riguarda solo i romanzi di Conan che scrisse Robert Howard, ma non sullo sfruttamento del nome e del personaggio che tuttora appartiene alla Conan Properties International, LLC (CPI), di proprietà della Cabinet Licensing, LLC.

Currently ownership in the copyright in voluminous derivative works (such derivative works include movies, television shows, books, comics, games and other copyrightable products) published from the 1950s to the present day, is asserted by an entity named Conan Properties International, LLC (CPI) which in turn is owned by Cabinet Licensing, LLC. www.cabinetentertainment.com. Cabinet apparently continues to keep its Conan-related intellectual property in the name of CPI.

Further, Cabinet asserts that they own a copyright in the character of Conan the Barbarian. As explained here, [4], some well-known characters are eligible for copyright protection, as separate and distinct from the stories in which they appear

https://en.wikipedia.org/wiki/Conan_the_Barbarian#Copyright_in_the_Character_in_Addition_to_the_Copyright_in_the_Stories

C'è da aspettarsi beghe legali.