Mylan's Epipen from 2007 to 2016

• How did certain laws and regulations make it possible for Mylan to increase the price of Epipen (consider both intellectual property laws and FDA regulations)?
• What were the results of the price increase, in terms of new competition from other companies producing epinephrine delivery products?
• Do these results (change in quantity produced, change in prices, availability of options) have any bearing on the ethics of Mylan's price increase?