Unprotection works

Certain works must be freely available and are thus not protected by copyright. This includes, for example, legislative texts, court decisions, official and administrative protocols, patent documents and published patent applications.

The free flow of ideas also needs to be unhindered. Ideas are thus not protected; protection is limited to the form expressing an idea, such as the written text.
Copyright > Unprotected works
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Intellectual Property Law Firm of China

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