Both parties to the patent transfer/transferee violate the contract as follows: 1. As the patent transferor 1. Failure to transfer the technology as stipulated in the contract or not transfer all the technology as stipulated in the contract; 2. Implement the patent Going beyond the scope of the contract, violating the contract or the provisions of Article 346 of the Contract Law, allowing a third party to exploit the transferred patent without authorization and charging fees; 3. Delaying the performance of the contract and delaying the transfer procedures; 4 , Failure to complete the patent transfer procedures for two months after the expiration date; 5. The transferee's implementation of the patent in accordance with the contract has infringed upon the legitimate rights and interests of others; 6. When the contract was signed, the patent right had been declared invalid by the Patent Office or the validity period of the patent right had expired . 2. As a patent assignee: 1. Failure to pay royalties as stipulated in the contract; 2. Implementation of the patent violates the provisions of Article 346 of the Contract Law, exceeds the scope of the contract, and without the consent of the assignor, License a third party to exploit the patent; 3. Violate the method of payment of the price stipulated in the contract; 4. Failure to pay the price two months overdue.