"A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an enabling disclosure of the invention."
https://en.wikipedia.org/wiki/Patent
"True free-market capitalism is free from all government intervention, including regulation, privileges, imperialism, tariffs, subsidies, and taxes"
https://survivingtomorrow.org/free-market-capitalism-always-ends-in-monopoly-5faa1e4d88b7
"Monopolies can be characterized as an erosion of free markets and can be rather harmful for consumers and the economy. Capitalism is forged upon freedom of choice and the de-facto existence of a monopoly takes that right away from consumers. Monopolies can control the volume of production and supply, the pricing of products or services, even above the seller’s marginal cost that leads to a high monopoly profit and eventually affect every single aspect of the relative industry."
https://innovatebiz.eu/international-business/monopolies-an-erosion-of-free-market-economy/