If you’re just talking about taking inspiration from another writer’s work, then that shouldn’t result in IP infringement.
After all, pretty much everyone who writes does the same thing. For example, the Society in Choice of the Vampire seems to have been inspired by the Camarilla from Vampire the Masquerade, which in turn took inspiration from Anne Rice’s novels.
The idea that a fictional society of vampires might have its own government and social conventions isn’t anyone’s intellectual property - and there shouldn’t be anything stopping you from developing a similar idea for your own games.