In economics, a monopoly market status is the only person to sell and produce products with no close substitutes. This is one form of market failure, is the extreme case of lack of market competition. Although in practice almost impossible case perfect meets two criteria of exclusive and therefore a pure monopoly can be considered non-existent but the exclusive form of pure are not leading to the non-effectiveness of social benefits. Exclusive rights are classified according to several criteria: the degree of monopoly, the cause of the exclusive, proprietary structure.
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