Deferred Charges

12 Months Ended

Dec. 31, 2013

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Deferred Charges

5. Deferred charges

Under the terms of the Amended and Restated License Agreement with Harvard, the Company is obligated to pay Harvard 5% of the total cash and equity considerations received as upfront sublicense payments pursuant to the sublicense agreement with Navidea. The Company recognized the $66,050 of license fees owed to Harvard as deferred charges and is amortizing these fees on a straight-line basis over the estimated performance period commensurate with the recognition of the related revenue. The deferred charges balance at December 31, 2013 and 2012, represents the unamortized portion of costs of license fees to be recognized in the future.