![]() A patent gives the inventor of a product a monopoly in producing and selling that product for a limited amount of time. Patents - Patents are a subclass of legal barriers to entry, but they're important enough to be given their own section. ![]() ![]() ![]() In many jurisdictions alcohol can only be sold by the government-run corporation, creating a legal barrier to entry in this market. In the United States, only the USPS can deliver first class mail, so this would be a legal barrier to entry.
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