After obtaining the patent right, at least after filing a patent application, the new product will be listed or exported. Apply for a patent before the product goes on the market or before production to prevent the loss of novelty and patent authorization qualification; Or after the patent is granted, others will declare the patent invalid on this ground; It can also prevent the technical content from disappearing ahead of time, generating competitors, and even being preempted by technical thieves to apply for patents, which will bring troubles and future troubles.