在我国專利权的保护期限为多久？

專利保护期限是指專利被授予权利后，得到專利保护的时间期限。发明和实用新型專利权被授予后，除《專利法》另有规定的以外，任何单位或者个人未经專利权人许可，都不得实施其專利，即不得为生产经营目的制造、使用、许诺销售、销售、进口其專利产品，或者使用其專利方法以及使用、许诺销售、销售、进口依照该專利方法直接获得的产品。

（一）发明專利权的保护期限：授权的发明專利，自申請日起20年

（二）实用新型專利权的保护期限：授权的实用新型專利，自申請日起10年

（三）外观设计專利权的保护期限：授权的外观设计專利，自申請日起10年

需要注意的是，在專利授权后，保护期限是从申请日算起，一般是向專利局提交申请的那一天（具体以專利局发的受理通知书里面确定的时间为准）

有下列情形之一的，專利权在期限届满前终止：

（一）沒有按照規定繳納年費的；

（二）專利权人以书面声明放弃其專利权的。

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But the royal art which he himself exercised, without expressly laying claim to it, was that which assigns its proper sphere to every other art, and provides each individual with the employment which his peculiar faculties demand. This is Athenian liberty and Athenian imperialism carried into education, but so idealised and purified that they can hardly be recognised at first sight. The idea of such a provisional code seems to have originated with Zeno;61 but the form under which we now know it is28 the result of at least two successive revisions. The first and most important is due to Panaetius, a Stoic philosopher of the second century B.C., on whose views the study of Plato and Aristotle exercised a considerable influence. A work of this teacher on the Duties of Man furnished Cicero with the materials for his celebrated De Officiis, under which form its lessons have passed into the educational literature of modern Europe. 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