However, if you feel that the other party has infringed, you can provide an examination opinion to the Intellectual Property Office during the publicity period when the product enters the China stage, indicating that the other party is in conflict with your product or does not have novelty and creativity.
If the product has been authorized in China, it will go through the procedure of invalidation. The process is rather troublesome, so you need to hire a lawyer or patent agent to do it.