definiens: means, ( a ) with respect to the rights granted to Tarsa hereunder, intellectual property that is necessary ( i ) todevelop, test, manufacture, use or sell the Licensed Calcitonin Product as it exists on the Effective Date, to the extentnecessary to obtain or maintain Regulatory Approval for such Licensed Calcitonin Product as required by a RegulatoryAuthority, ( ii ) to develop, test, manufacture, use, sell or obtain or maintain Regulatory Approval for any Calcitonin * * * Product, ( iii ) to manufacture * * * as it is manufactured by Unigene as of the Effective Date and ( iv ) to manufacture CalcitoninAPI as it is manufactured by Unigene as of the Effective Date and, ( b ) with respect to the rights granted to Unigene hereunder, intellectual property that is necessary to develop, test, manufacture, use, sell or obtain or maintain Regulatory Approval of anoral calcitonin product in the Unigene Field