The effect of patent expiration on sales of branded competitor drugs in a therapeutic class

DrugPatentWatch was used in a recent research study on branded drug sales following generic entry.

In this paper, authors Jeffrey Fujimoto, Daniel M Tien, Sophie Snyder, Jeppe A Hertz, and Stuart Schweitzer analyzed the effect of patent expiration of the first innovative drug in a therapeutic class on competitor sales within the same therapeutic class for five major therapeutic classes.