回复：关于中国商标、美国商标的问题

来源: 于 2013-04-16 22:22:10 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

X company has to register the mark in USPTO, in order to enforce it here. Before registration, X company cannot use circle R symbol, which indicates federal registration.  X company may get a warning from PTO.