A patented medicine can legally be produced by only one firm for a period. What is the most likely effect of the patent?
It creates a barrier to entry that strengthens the producer's market power
It guarantees that many identical medicines enter immediately
It removes product differentiation from every medicine market
It turns patients into competing producers
149 exam-style questions on AQA GCSE Economics 1.5 Competitive and concentrated markets, covering 1.5.1a The range of market structures, 1.5.1b Distinguishing between market structures, 1.5.2a Characteristics of a competitive market, 1.5.2b How producers operate in competitive markets, 1.5.2c The economic impact of competition, 1.5.3a Characteristics of a non-competitive market, 1.5.3b How producers operate in non-competitive markets, 1.5.3c Monopoly and oligopoly, 1.5.4a The labour market and wage determination, and 1.5.4b Gross and net pay. Each one has a worked solution and a mark scheme showing where the marks go.