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问题	请求宣告专利权无效的法定时间什么时候
释义	随时。自国务院专利行政部门公告授予专利权之日起，任何单位或者个人认为该专利权的授予不符合本法有关规定的，可以请求专利复审委员会宣告该专利权无效。【本文所涉及的法律依据】：：《中华人民共和国专利法》,第四十二条发明专利权的期限为二十年，实用新型专利权和外观设计专利权的期限为十年，均自申请日起计算。,第四十三条专利权人应当自被授予专利权的当年开始缴纳年费。
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