definiens: is defined as two or more pharmaceutically active ingredients that are linked by a covalent or ionic bond with each other, which bond dissolves in vivo, and where sp ecifically excludes any natural extracts ; or ( iv ) pro -drug modifications for altering the bioavailability or rate of release of a drug for non -topical applications ; or ( b ) would interfere with the subject matter of, or dominate the practice of any invention disclosed in, Licensed Patents or invention disclosure forms disclosed in Exhibits 1.23(a ) or ( b ) ( all such inventions in subparts ( a ) and ( b ) of this Section 2.7 are referred to collectively as ) are disclosed in the invention disclosure forms and unpublished patent applications that have been disclosed to Licensor 's counsel by Licensee . In addition to any other remedies available to Licensor, Licensee shall gr ant and hereby grants Licensor a world -wide perpetual, non -exclusive royalty -free license, with the right to sublicense, to use any Licensee Relevant Invention made by Licensee after June 9, 1999, and before June 18, 2003, that was not disclosed t o Licensor 's counsel by Licensee ; provided, however, that such right and license shall be subject to Licensee 's other rights hereunder, e.g., the exclusive rights granted under Section 2.1.1 and Section 2.5