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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
Jan. 31, 2021
Oct. 31, 2020
Payables and Accruals [Abstract]    
Payroll and related expenses $ 228,163 $ 415,331
Accrued royalty and contingent legal fees 577,190 449,691
Accrued collaborative research and license expense 147,410 30,000
Accrued other 20,072 6,003
Accrued expenses $ 972,835 $ 901,025