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There are Different Types of Patents
几种不同的专利
There are Different Types of Patents
几种不同的专利

There are three different main kinds of US patent applications:
美国专利申请包括三大种类：

Utility Patent Application, considered the “main” type. It covers the functional features of the invention, but does not cover the appearance.
实用专利申请是主要的一种类型。它涉及发明的功能性特征，但不涉及外观。

Design Patent Application. It covers only the appearance, or the decorative features of the invention. It does not cover the functional features. The cost is much less than for a utility patent application.
设计专利申请。它仅涉及发明的外观或装饰性的特征，而不涉及功能性特征。这种专利的申请费用远低于实用专利申请。

Provisional Patent Application. This is a temporary, low cost type of patent application which pends for one year. During that year, a later-filed Utility patent application can be filed based on the Provisional patent application. The advantage is that it gives official “patent pending” status.
临时专利申请。这种专利申请时临时的，有效期是一年，申请花费较低。在当年，晚递交的实用型专利申请会按照临时专利申请进行申请。这种专利申请的优势在于可以标示“专利未决”。

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