How to review the failed appearance patent complaints in Pinduoduo?

Does the subject want to ask "What is the reason for the failure of examination and approval of Pinduoduo appearance patent complaints"? The complaint information is incomplete and the evidence is insufficient.

1. Incomplete complaint information: A complaint about an appearance patent requires a complete complaint, including the name, model, design details, patent number, application date and other information of the complained product.

2. Insufficient evidence: the complaint needs to provide sufficient evidence to prove that the complained product infringes the patent right of appearance, such as patent certificate, infringing contrast picture, etc.