If you have no confidence in China, do you apply for a patent directly in the country where you think it is possible to succeed, or do you have to apply for a patent in China before you can apply for a patent abroad? A: According to Article 20 of the Patent Law, any unit or individual who applies for a patent for invention or utility model completed in China to a foreign country shall file a confidentiality review with the patent administration department of the State Council in advance. The procedures and time limit for confidentiality review shall be implemented in accordance with the provisions of the State Council. Units or individuals in China may file an international patent application in accordance with the relevant international treaties to which People's Republic of China (PRC) is a party. The applicant who files an international application for a patent shall abide by the provisions of the preceding paragraph.
Patents are regional. Patents granted by one country are only valid in the country where the granting country is located and are not legally binding on other countries. Patents granted by each country are independent of each other. This product has no patent in China and is not protected by China law, so you don't infringe. Even if you produce a product, as long as it is not sold to the country that granted the patent right, there is no infringement.
2. You bought the product from the patentee's company, and the patent right of the product has been exhausted. Even if the product is patented in China, you won't infringe.
3. The right of sale or agency is not protected by law, but limited by the internal terms of the company. In other words, if the company thinks that you have violated their sales strategy, it will not supply you at most. Have no right to claim the law.