Control of sale or use. Information from the "Intellectual Property Law" of the Central Radio and Television University undergraduate course shows that the patentee no longer has the control over the sale or use of the patented products that have been legally put on the market, which is called exhaustion of patent rights. Patent rights refer to the right of the patentee to exclusively use, profit from, and dispose of his invention and creation within the scope prescribed by law, and to exclude the interference of others.