You can't actually create a rule for this. Rules have to be enforced by an individual or an organization.
And who's gonna do that in the crypto world ? Yup it's decentralized. \

So, basically no you can't do anything about it. Theoretically, someone CAN actually create a new coin and call it the same name of an old coin but what would be the use of that ?

It won't get listed on anything. No exchanges, nothing. Not even Coinmarketcap. So, it's not gonna work whatsoever.
This is one of the things that don't happen because they can't.