Consolidated Balance Sheets (Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 3,338,513	$ 2,969,416
Royalties receivable, net of reserves of $1,094,774 at March 31, 2019 and December 31, 2018	764,362	689,677
Prepaid expenses and other current assets	151,444	52,729
Total current assets	4,254,319	3,711,822
Fixed assets, net	268,812	313,177
Operating lease Right of Use assets	897,322
Deposits and other assets	33,567	33,567
Total assets	5,454,020	4,058,566
Current liabilities:
Current portion of operating lease liability	158,105
Accounts payable	70,007	133,486
Accrued expenses and other	92,134	273,606
Deferred revenue	51,221	50,570
Total current liabilities	371,467	457,662
Operating lease liability, net of current portion	936,174
Warrant liability	749,004	501,414
Total liabilities	2,056,645	959,076
Shareholders' equity:
Common stock, par value $0.0001 per share; authorized 100,000,000 shares, issued and outstanding 28,666,831 as of March 31, 2019 and 27,665,211 as of December 31, 2018	2,867	2,767
Additional paid-in capital	115,889,339	114,787,657
Accumulated deficit	(112,494,831)	(111,690,934)
Total shareholders' equity	3,397,375	3,099,490
Total liabilities and shareholders' equity	$ 5,454,020	$ 4,058,566