SuperNova on 27 August 2018
Nintendo already owns the the Pokemon trademak in full. They own the copyright to every Pokemon and character name. They have no risk of ever loosing it.
As for the IP itself, Nintendo probably owns at least 50% of it, probably more, since they own about 10% of Creatures inc, who in turn own part of Game Freak and the Pokemon IP.
It's true they have no direct stake in GF, but they own part of it through their stake in Creatures inc.
As for the Pokemon Company, who manages the brand, it's owned in equal shares by Nintendo, GF and Creatures inc., so Nintendo again through their share in Creatures owns the majority of it.
source: https://toucharcade.com/2016/07/28/who-owns-pokemon-anyway-its-complicated/
