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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities:    
Net loss $ (1,085,242) $ (1,023,575)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 6,961 87,276
Unrealized loss on marketable securities 1,650
Other income - PPP loan forgiveness (194,140)
Bad debts expense (recovery) 53,217
Change in assets and liabilities:    
Royalty receivables (231,573) (49,675)
Prepaid expenses and other current assets (143,413) (79,638)
Accounts payable and accrued expenses 40,823 (73,679)
Deferred revenue 26,002 40,567
Net cash used in operating activities (1,384,792) (1,239,647)
Cash flows from investing activities:    
Purchases of fixed assets (935) (939)
Proceeds from sale of fixed asset 3,713
Purchases of marketable securities (3,433,633)
Sales of marketable securities 300,000
Net cash (used in) provided by investing activities (3,134,568) 2,774
Cash flows from financing activities:    
Proceeds from exercise of options 86,262 284,207
Proceeds from PPP Program Funding 202,052
Net cash provided by financing activities 86,262 486,259
Net decrease in cash and cash equivalents (4,433,098) (750,614)
Cash and cash equivalents at beginning of period 4,772,705 6,591,960
Cash and cash equivalents at end of period $ 339,607 $ 5,841,346