技术一旦以某种方式公开,就构成了现有技术,不再具有新颖性;但为了鼓励申请人在国际与国内进行技术交流,以及防止因他人失约或欺诈而给申请人造成损害,《专利法》规定了不丧失新颖性的公开的三种情况;需要注意的是,《专利法》所列三种情况仅是新颖性规则的例外,6个月时间被称为“宽限期”,它意味着申请人只要在发生三种情况之一的那一天起6个月内申请专利权,这三种情况导致技术被公开的情形本身并不影响申请的新颖性,要区分不丧失新颖性的宽限期与优先权的区别,申请日仍然是向国家知识产权局递交专利申请的日期。
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