Patent mark right is also called patent mark use right and patent labeling right. Patent mark right is one of the rights of the patentee. The patentee has the right to itself or to require the licensee to mark the patent mark and patent number on its patented product or the packaging of the product. This is meaningful for promoting enterprises, gaining trust in the market, and stopping infringement. The right to mark is a right, but not an obligation, of the patentee. Regarding this right, whether the patentee exercises or waives it entirely depends on the patentee's will, and the law does not make mandatory provisions.
According to Article 15 of the Patent Law, the patentee has the right to indicate the patent mark and patent number on its patented product or the packaging of the product. As for the specific content of patent marks, there is no unified provision in my country’s Patent Law, and patentees can design their own patented products. The patent number is the patent number determined by the patent administration department when the patentee applies for a patent. This number remains consistent throughout the validity period of the patent right and cannot be changed by the patentee.