Is patented technology considered a monopoly, and are the fees for patents set by the patentee himself?

Can be considered a monopoly, but it is a legal monopoly, if it involves national interests or significant social interests, the state will limit the monopoly, such as preventing or treating infectious diseases such as drugs.

The patent license fee can be set by the patentee himself, but also have to be willing to pay for each other to buy, such as your patent itself is worth 1 million, have to let people out of the 10 million or the right to use, people with no money to earn, naturally, will not buy it

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