Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
 3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Cash flows from operating activities:    
Net loss $ (2,616,575) $ (4,966,609)
Stock option compensation to employees and directors 963,880 1,219,560
Stock options and warrants issued to consultants 57,454 46,219
Restricted stock award compensation to employee pursuant to stock incentive plan 1,484,385
Depreciation of property and equipment 14,998 6,130
Amortization of operating lease right-to-use asset, net of lease payments 312
Amortization of patents 251,250
Impairment in carrying amount of patent assets 418,750
Change in operating assets and liabilities:    
Receivables 44,216 203,897
Prepaid expenses and other current assets 30,482 (55,086)
Accounts payable (218,719) 30,928
Accrued expenses (190,464) 31,040
Net cash used in operating activities (1,914,416) (1,329,536)
Cash flows from investing activities:    
Disbursements to acquire short-term investments in certificates of deposit (1,870,000)
Proceeds from maturities of short-term investments in certificates of deposit 1,350,000 250,000
Purchase of property and equipment (15,790)
Net cash (used in) provided by investing activities (535,790) 250,000
Cash flows from financing activities:    
Net proceeds from sale of common stock in at-the-market offering 1,751,983 2,153,584
Proceeds from exercise of stock options 28,480 22,700
Net cash provided by financing activities 1,780,463 2,176,284
Net (decrease) increase in cash and cash equivalents (669,743) 1,096,748
Cash and cash equivalents at beginning of period 3,491,625 3,055,890
Cash and cash equivalents at end of period 2,821,882 4,152,638
Supplemental disclosure of non-cash investing and financing activities:    
Operating lease right-to-use asset (106,221)
Operating lease liability $ 106,299