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Collaborative Agreements
12 Months Ended
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Collaborative Agreements
Collaborative Agreements
The Company continues its strategy of establishing research collaborations and licensing platforms to complement its substantial internal research capabilities. These arrangements often include upfront payments and royalty or profit share payments, contingent upon the occurrence of certain future events linked to the success of the asset in development, as well as expense reimbursements or payments to the third party.
The Company has entered into various Collaborative Development and License Agreements with VGX Int’l as discussed in Note 16. In May 2004 we announced a licensing arrangement with Merck for the development of Merck’s DNA cancer and infectious disease vaccines. Under these Agreements, the Company may receive future event based payments upon approval of an investigational new drug application (IND) and/or initiation of clinical trials and future net sales. These future event based payments do not meet the criteria of a milestone in accordance with the authoritative guidance as they are solely based on the performance of the collaborators.