CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parentheticals) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Research and Development Expense [Member]
Non-cash share-based compensation expenses	$ 338,449	$ 2,472,489	$ 2,567,294	$ 2,668,315
Selling, General and Administrative Expenses [Member]
Non-cash share-based compensation expenses	$ 492,449	$ 2,155,844	$ 2,335,218	$ 2,558,701