Using Patents To Needlessly Drive Up Healthcare Costs: The Economic Impact Of Evergreening Drugs

One technique in the world of pharma that has started appearing here on Techdirt is "evergreening" -- making small changes to a drug, often about to come off patent, in order to gain a new patent that extends its manufacturer's control over it. The advantages for pharma companies are evident, but what about the public? What economic impact does evergreening have? That's what a fascinating new paper in the open access journal PLoS Medicine seeks to establish: 

On Techdirt.