Can other companies sell products patented by the same legal person?

Other companies can sell products patented by the same legal person, but they need to obtain relevant permission or authorization. The patentee has exclusive rights to its patented product, and other companies need to reach a license agreement or purchase authorization with the patentee to produce, sell or use the product. This means that other companies cannot directly copy, sell or use protected patented products without permission. Otherwise, they may face tort litigation and legal liability. Therefore, if you are interested in selling the same patented product, it is recommended to contact the patent holder first to negotiate legal authorization or permission. This can ensure that you comply with relevant intellectual property laws and avoid potential legal risks.