First, you can negotiate with the other party individually or under the auspices of the platform, inform the other party that you already have a design patent and an evaluation report, and ask them to stop infringement. If the other party refuses, you can report the infringement facts and evidence to the Patent Office and other relevant administrative departments, which will take administrative measures to investigate and verify the infringement behavior of the infringer and impose administrative penalties. Or file a lawsuit with the court to stop the infringement and compensate for economic losses, apply for litigation preservation of the infringement facts and evidence of the infringer, and apply for an injunction from the court to prohibit the infringer from continuing the infringement.
Confirm whether there is no infringement. The following is a complaint about trademark, copyright, and patent;
The stability of the other party’s evidence, including but not limited to the other party’s rights date (usually Proof of sale before the application date), and whether the other party’s design patent is in the invalid period;
Do you have legal authorization or legal purchase certificate;