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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Cash flows from operating activities        
Net loss $ (2,459,571) $ (6,024,480) $ (11,733,549) $ (20,084,554)
Adjustments to reconcile net loss to net cash used in operating activities        
Depreciation expense 8,502 8,502 17,004 9,919
(Gain) loss on debt extinguishment (2,434,661) 2,268,373 2,268,373 5,643,607
Decrease in fair value of derivative liabilities (618) (12,321) (67,439) (783,129)
Amortization of discount on notes payable 1,447,400 1,740,150 3,242,080 883,125
Accrued interest on patents purchased 123,233 0 258,246 0
Impairment of acquired contracts     0 686,350
Amortization of patents and acquired contracts 811,989 831,123 1,643,110 1,557,108
Net cost of patents sold 0 215,372 215,373 0
Stock-based compensation 393,456 596,901 1,147,374 2,873,396
Issuance of new stock in conjunction with the restricted stock granted     0 225,001
Changes in operating assets and liabilities        
Accounts receivable 4,966 205,524 227,108 (259,049)
Inventories 0 130,155 302,739 12,207
Prepaid expenses and other current assets, net (24,140) (119,008) 1,192 (113,282)
Deferred expenses (34,877) 315,058 (78,292) 0
Deposits and other assets 0 (10,000) 0 1,406
Accounts payable (384,683) (62,805) 344,965 906,835
Accrued expenses and other current liabilities 405,555 365,091 (288,406) 114,971
Accrued interest on notes payable     0 (6,935)
Deferred revenue 300,000 596,429 896,429 0
Warranty reserve     0 (38,143)
Net cash provided by (used in) operating activities (1,843,449) 1,044,064 (1,603,693) (8,371,167)
Cash flows from investing activities        
Purchases of property and equipment     0 (52,186)
Issuance of short-term note receivable, related party     0 (3,000,000)
Cash and other assets received in acquisition     0 790,172
Net cash used in investing activities     0 (2,262,014)
Cash flows from financing activities        
Proceeds from issuance of preferred stock, net of issuance costs 2,425,000 0    
Proceeds from issuance of common stock, net of issuance costs 1,182,278 1,835,000 1,835,000 6,021,144
Proceeds from issuance of convertible notes payable, net of issuance costs     0 3,371,834
Proceeds from issuance of notes payable 0 1,126,900 1,126,900 9,964,868
Proceeds from related party note payable     0 300,000
Payments on short-term notes payable, related party     (100,000) (100,000)
Payments on convertible notes     0 (8,000,000)
Payments on Fortress notes payable (1,640,016) 0 (2,147,000) 0
Payments on guaranteed payment liability     0 (1,000,000)
Payments on related party note payable (50,000) 0    
Net cash provided by financing activities 1,917,262 2,961,900 714,900 10,557,846
Net decrease in cash and cash equivalents 73,813 4,005,964 (888,793) (75,335)
Cash and cash equivalents, beginning of period 554,556 1,443,349 1,443,349 1,518,684
Cash and cash equivalents, end of period 628,369 5,449,313 554,556 1,443,349
Supplemental disclosures of cash flow information        
Cash paid for interest 426,249 481,838 841,784 516,919
Cash paid for income taxes     0 0
Supplemental disclosures of non-cash investing and financing activities        
Accrued guaranteed payments and deferred expenses related to purchased patents 0 881,501 (16,258,540) 1,749,230
Conversion of portion of short term note payable, related party, to purchase common stock 0 100,000 100,000 0
Conversion of preferred stock to common stock     2,711 0
Offset of short-term related party notes payable and receivable     0 3,000,000
Transfer of Series A redeemable convertible preferred stock to preferred stock     $ 0 $ 3,392,950
Fair value of common stock warrants $ 1,481,978 $ 0