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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018
Revenue | $ 250,000 | $ 1,112,500
Operating costs and expenses: |  |
Inventor royalties, contingent legal fees, litigation and licensing expenses | 166,250 | 768,410
Amortization of patents | 418,750 | 325,296
Research and development expenses (including non-cash share based compensation expenses of $2,825,630 and $4,596,866, respectively) | 5,473,427 | 6,813,043
General and administrative expenses (including non-cash share based compensation expenses of $2,888,115 and $4,298,748 respectively) | 5,662,828 | 6,911,830
Impairment in carrying amount of patent assets (Note 2) | 418,750 | 582,979
Total operating costs and expenses | 12,140,005 | 15,401,558
Loss from operations | (11,890,005) | (14,289,058)
Interest income | 71,353 | 45,974
Loss before income taxes | (11,818,652) | (14,243,084)
Provision for income taxes (Note 6) |  |
Net loss | (11,818,652) | (14,243,084)
Less: Net loss attributable to noncontrolling interest | (171,598) | (247,059)
Net loss attributable to common stockholders | $ (11,647,054) | $ (13,996,025)
Net loss per share: |  |
Basic and diluted (in Dollars per share) | $ (0.59) | $ (0.79)
Weighted average common shares outstanding: |  |
Basic and diluted (in Shares) | 19,789,795 | 17,624,335

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