The previous study does not clarify how to satisfy the interoperability of open System of Systems (SoS) in runtime assurance. Therefore, the purpose of this study is to propose the patterns coping with evolving open SoS, which deal with setting interfaces and functions on the sending side and the receiving side within the open SoS, in order dynamically to set the acceptable interoperability of the open SoS in runtime assurance. Concretely, in order to cope with evolving interfaces and functions on the sending side and the receiving side within the open SoS, we derive those patterns for continuously working open SoS which evolves in runtime which adopts the four axes. The evaluation method shows the results actually applied to the combination information systems which cooperate among Product Lifecycle Management, Enterprise Resource Planning and Manufacturing Execution Systems in one company of the manufacturing industry in Japan, as open SoS.