Abstract:The original manufacturers have the exclusive right to remanufacture the patented products． The third party can only recycle and remanufacture the patented products with the patent licensing from the original manufacturer． There are the limited research studies about the remanufacturing intellectual property protection． Thus，a closed-loop supply chain model was constructed which indicated the protected original manufacturer permit the third party to remanufacture． Game theory was used to discuss the optimal decision in the de-centralized and centralized model． In addition，how patent licensing impact on the used products recycling and remanufacturing was analyzed． Finally，a revenue and expense sharing contract ( RAESC) including three parties is proposed to coordinate the closed-loop supply chain different from the traditional revenue sharing contract．