Why are there duplicate patents in patent search?

1. The utility model patent is only examined in form, not in substance, so as long as the document meets the requirements, the patent right will be granted. So the same utility model patent will be repeated.

2. If you want to declare the patent of the other party invalid, you need to apply to the Patent Reexamination Board and provide evidence to prove that the patent of the other party is invalid. Patent search center has invalid search service, you need to do this search.

As for what materials need to be prepared, you should analyze your patent and the patent of the other party in detail, and the agent suggests that you prepare evidence and materials.

4. Not all invalid cases will go away, and specific cases should be analyzed. As long as you have time and energy and evidence to support it, you can do it.

If in doubt, please consult: 0 10-88 143637, msn:info@gotbrand.com.cn.