These are two common myths, and both are wrong.if the creator is deceased the route will go public domain so you can redistribute it if the copyright holder is dead it depends if he even went to the US (or whatever country he/she was in) copyright office to apply for a copyright
Copyright rights do not extinguish on the death of the copyright holder. The rights pass to the estate. They are just as enforceable by the estate as if the original creator was alive.
Copyright rights do not usually have to be registered in order to be enforceable. The US, for instance, does not require registration. It's not even necessary to put a copyright notice in the work, although registration and a notice might assist in enforcing the owner's rights.
Please read the summary here: https://en.wikipedia.org/wiki/Copyright