definiens: means all OGX Intellectual Property, OGX Improvements and OGX 's interest in Joint improvements, the application of which has utility only ( or for all commercially practical purposes only ) with respect to Licensed Compound or Licensed Products, including the OGX Intellectual Property that is set forth on Schedule 1.90 . To the extent that any patent or patent application within the OGX Patent Rights includes both ( i ) claims directed specifically to the Licensed Compound, or Licensed Product as a composition of matter, or methods of using any of the foregoing, as well as ( ii ) other claims ( that do not meet the requirements of clause ( i ) above ), then the Parties shall ( as part of the Prosecution efforts under Section 6.2(a ) ), but only if practicable, use commercially reasonable efforts to divide such patents or patent applications ( by all means available under applicable Laws ) such that the result is ( x ) one or more patents ( or patent applications, as applicable ) in the OGX Patent Rights that have 2 ) only claims directed specifically to the Licensed Compound, or Licensed Product as a composition of matter, or methods of using any of the foregoing, which patents and applications shall be deemed part of the OGX Product Specific Intellectual Property, and ( y ) one or more other patents ( or patent applications, as applicable ) in the OGX Patent Rights that do not have any claims directed specifically to the Licensed Compound, or Licensed Product as a composition of matter, or methods of using any of the foregoing, which patents and applications shall not be OGX Product Specific Intellectual Property but shall remain OGX Patent Rights to the extent such patents or applications meet the definition thereof