Marijuana remains an illegal substance pursuant to the controlled substances act. Therefore, the United States Patent and Trademark office will NOT issue a federal registration, even for medicinal purposes. But, there are alternative ways of securing trademark rights for Marijuana and related goods or services.
1
Use and police your trademark in states where Marijuana is legal.
2
File for trademarks in states you do business or license your trademark(s).
3
Seek registration for goods or services related to marijuana, but that are not illegal. For example: CBD infused dietary and nutritional supplements or products derived from industrial hemp.
4
File for trademark protection in states where marijuana is legal and open for registration in that state.