The doctrine states that a patentable invention must be nonobvious to a person of ordinary skill in the art at the time the invention is made.
The doctrine认为，具有专利性的发明必须具备非显著性。
It is generally well known to one having ordinary skill in the art that a user can depress the release button 80 to remove the cover 20 from the housing 12.
对于具有本领域基本知识的人来说下面的操作是常识：即用户可以按压释放按钮80从而把外罩20从外壳12上除去。
These and other advantages will be apparent to those of ordinary skill in the art by reference to the following detailed description and the accompanying drawings.
对于本领域的普通技术人员而言，通过参考下列详细的描述和随附的附图，这些和其它优点将变得显而易见。
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