What is the role of patent "duplication" in patent trading?

The reason why "copy" is included is because many customers often ask the question of "copy" in the process of patent trading. The original patent, most of which are familiar, is a patent certificate issued by the Patent Office with the official seal and the director's signature. However, when it comes to "copies", some customers don't know what is going on. See the article "What's the difference between a patent copy and a patent copy? Here is a detailed introduction, and here is a general introduction.

Speaking of "copy", it is necessary to distinguish between "copy of patent book" and "copy of patent certificate", which are completely different, and the handling methods and procedures are also different. "Copy of patent book" is the relevant document reflecting the ownership of patent and the change information. There is no difference between "copy of patent certificate" and patent certificate, except that the word "copy" is marked on it.

Although they are all "copies", the handling methods and precautions are still very different. In particular, the number of "copies of patent certificates" is limited, and no one can apply for copies of certificates without restrictions, while "copies of patent books" are not restricted. At present, official fees are required for "copy of patent book" and "copy of patent certificate". When dealing specifically with "copywriting", we need to focus on the differences between the two and handle them as appropriate.