Is it illegal to sell expanders?

Yes, first of all, the actor who sells fake goods belongs to selling fake goods and is illegal. If the circumstances are serious and the amount is large, criminal responsibility shall be borne. The crime of producing and selling fake and inferior products refers to the behavior that producers and sellers adulterate products, pass fake products off as genuine ones, pass substandard products off as qualified products, and the sales amount reaches more than 50,000 yuan.

1. Can I sell other people's patented products?

1. Selling other people's patented products without the permission of the patentee constitutes infringement. If the seller does not know that the patented infringing product is sold without the permission of the patentee and can prove the legal source of the product, he shall not be liable for compensation, but shall immediately stop selling the patented infringing product.

2. Article 70 Anyone who, for the purpose of production and operation, uses, promises to sell or sells an infringing patented product without knowing that it was manufactured and sold without the permission of the patentee shall not be liable for compensation if he can prove the legal source of the product.

3. According to the relevant laws and regulations of our country, selling products that knowingly infringe others' patent rights will constitute patent infringement, and the seller shall bear the tort liability.

Two. What are the contents of substantive examination of invention patents?

1. Does the invention for which a patent is applied belong to the invention referred to in the Patent Law?

2. Whether the invention for which the patent is applied violates national laws, social morality and public interests;

3. Whether the invention for which the patent is applied belongs to the field where the patent right is not granted;

4. Whether the invention for which the patent is applied is novel, creative and practical;

Legal basis: Article 140 of the Criminal Law of People's Republic of China (PRC), producers and sellers who adulterate products with fakes, pass fake products off as genuine products, and pass unqualified products off as qualified products, with a sales amount of more than 50,000 yuan but less than 200,000 yuan, shall be sentenced to fixed-term imprisonment of not more than two years or criminal detention, and shall also, or shall only, be fined not less than 50% but not more than 200,000 yuan; If the sales amount is more than 200,000 yuan but less than 500,000 yuan, he shall be sentenced to fixed-term imprisonment of not less than two years but not more than seven years, and shall also be fined not less than 50% but not more than two times the sales amount; If the sales amount is more than 500,000 yuan but less than 2 million yuan, he shall be sentenced to fixed-term imprisonment of more than seven years, and shall also be fined more than 50% but less than two times the sales amount; If the sales amount is more than 2 million yuan, he shall be sentenced to fixed-term imprisonment of 15 years or life imprisonment, and shall also be fined more than 50% but less than 2 times the sales amount or his property shall be confiscated.