If you bring a lawsuit to the court, it is not enough to provide evidence of commodity packaging. Specifically, you need to collect the following evidence:
1. Prove that you enjoy the patent right of commodity packaging or the right to use patent license.
2. Prove the infringer's act of counterfeiting commodity packaging.
Usually, as long as the products with commodity packaging and their sales invoices, patents and comparative materials of commodity packaging technical characteristics are submitted.
3. Prove that the amount of compensation proposed is based on facts.
The extraction of this kind of evidence, such as the evidence of the losses you suffered because of infringement, or the evidence of the benefits that the infringer obtained because of infringement.
Legal basis: Article 52 of the Trademark Law of People's Republic of China (PRC) uses an unregistered trademark as a registered trademark, or uses an unregistered trademark in violation of the provisions of Article 10 of this Law, the local administrative department for industry and commerce shall stop it, make corrections within a time limit, and may notify it. If the illegal business amount is more than 50,000 yuan, a fine of less than 20% of the illegal business amount may be imposed; if there is no illegal business amount or the illegal business amount is less than 50,000 yuan, a fine of less than 1 10,000 yuan may be imposed.