CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parentheticals) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Research and Development Expense [Member]
Non-cash share-based compensation expenses	$ 655,066	$ 155,769	$ 2,228,845	$ 195,826
Selling, General and Administrative Expenses [Member]
Non-cash share-based compensation expenses	$ 666,384	$ 175,941	$ 1,842,769	$ 402,857