You can produce products. If the patent belongs to someone else, you cannot write the patent number regardless of whether it is valid or not (unless of course the other person agrees). If it is your own patent, you can write a patent number on the product as long as the patent is still valid. I don’t know why you claim that it is not patentable after searching: 1. If it is blocked by the national intellectual property rights during the application review stage If the bureau retrieves comparative documents and determines that there is no patentability, and the patent is rejected or deemed withdrawn, then it means that you have never obtained a patent right at all. Of course, you cannot write the number on the product as a patent number; 2. If it is a utility model after authorization , the evaluation report you requested stated that it has no patentability, so it’s really hard to say in this situation. The evaluation report does not invalidate the utility model. The patent right still exists, and the patent number should be continued to be marked, but this is somewhat unreasonable. , the patentee clearly knows that his patent is not patentable but still labels the product as a patented product. It is uncertain what problems will arise in the future.
As you said: The search report is not the basis for judging whether the patent is valid or not. The significance of the patent search report is to provide the existing technical data closest to the patented technology, so as to serve as a reference for judging whether the patent is valid or not. . Well, I think that since the patent rights have not been invalidated, you still have the right to indicate the patent number. The probability of subsequent problems is not particularly high, and the consequences will not be serious. I personally think you can continue to indicate the patent number.