It is not essential to know all the small print of BIP39 in an effort to use copyright - but you would definitely take advantage of knowing slightly about this. This text explains BIP39, the standard that defines how seed phrases are created, and summarizes how BIP32 and BIP44 standards http://andersonsaeu988.iamarrows.com/from-mnemonics-to-safety-and-security-recognizing-bip39-passphrases-and-their-significance-in-copyright