問題詳情

14 The date when a patent is no longer valid in a country or system due to failure to pay renewal (maintenance) fees is called:
(A) lapse
(B) termination
(C) expiration
(D) suspension

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)