https://www.selleckchem.com/pr....oducts/pdd00017273.h
In the United States, pharmaceutical patents have had a number of perverse and anticompetitive effects on the development and marketing of prescription drugs. Although some of these effects are unique to the United States, others have implications for patent policy across the world. Among the negative effects of drug patents are (1) examples of misguided, anti-social, and anticompetitive promotion of patented drugs; (2) misguided incentives that push drug firms toward too much or too little research and development in critical areas