Common use of Core Technology Clause in Contracts

Core Technology. Kirin will file and prosecute the patent --------------- applications and applications for trademarks and copyright registration, and maintain resultant patents, trademarks and copyrights, included within the Kirin Core Technology worldwide. Kirin shall bear all costs and expenses associated therewith. Amgen will file and prosecute the patent applications and applications for trademarks and copyright registration, and maintain resultant patents, trademarks and copyrights, included within the Amgen Core Technology worldwide. Amgen shall bear all costs and expenses associated therewith.