definiens: for a Quarter shall mean ( a ) twenty - five percent ( 25 % ) of the aggregate amount ofDevelopment Costs incurred by both Parties under the Global Development Plan from January 1, 2007 through the close ofsuch Quarter [ ( * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ) ] plus ( b ) fifty percent ( 50 % ) of the aggregate amount ofDevelopment Costs incurred by both Parties under the Territory Development Plan from the Effective Date through the closeof such Quarter [ ( * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ) ] less ( c ) the aggregate amount of GlobalDevelopment Balance Payments included in the calculation of the Quarterly True - Up in all prior Quarters