Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Details - Schedule of Accounts Payable and Accrued Liabilities (Details)

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Balance Sheet Details - Schedule of Accounts Payable and Accrued Liabilities (Details) - USD ($)
Apr. 30, 2020
Jul. 31, 2019
Balance Sheet Related Disclosures [Abstract]    
Research and development costs $ 2,814,868 $ 2,380,215
Professional services fees 6,124,971 1,702,886
Other 101,694 133,916
Total $ 9,041,533 $ 4,217,017