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Consolidated Balance Sheets (USD $) | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Current Assets |  |
Cash and cash equivalents | $ 2,197,555 | $ 3,569,098
Marketable securities | 1,598,209 | 5,146,823
Restricted cash | 553,682 | 551,883
Accounts receivable - project revenue and reimbursable project costs | 601,803 | 277,211
Prepaid expenses & other current assets | 574,590 | 269,697
Total Current Assets | 5,525,839 | 9,814,712
Property Plant and Equipment -net | 17,221 | 46,514
Other Assets |  |
Patent costs - net | 600,596 | 537,075
Security deposits | 0 | 120,486
Total Other Assets | 600,596 | 657,561
Total Assets | 6,143,656 | 10,518,787
Current Liabilities |  |
Accounts payable and accrued liabilities | 385,223 | 1,680,433
Total Current Liabilities | 385,223 | 1,680,433
Stockholders' Equity |  |
Preferred stock, $0.001 par value, 50,000,000 authorized shares, no shares issued and outstanding | 0 | 0
Common stock, $0.001par value, 500,000,000 authorized, 12,540,686 shares issued, 12,526,240 shares outstanding and 12,476,414 shares issued, 12,427,220 shares outstanding at December 31, 2012 and December 31, 2011, respectively | 12,526 | 12,427
Additional paid in capital - stock and stock equivalents | 71,955,631 | 70,946,951
Deficit | (66,212,849) | (62,155,774)
Common stock reserved for issuance, 2,264 shares and 17,120 shares at December 31, 2012 and December 31, 2011, respectively | 3,125 | 34,750
Total Stockholders' Equity | 5,758,433 | 8,838,354
Total Liabilities and Stockholders' Equity | $ 6,143,656 | $ 10,518,787

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