According to estimates by Evaluate Pharma, a whopping $120 billion in sales was lost to patent expirations between 2009 and 2014. Evaluate Pharma also forecasts that $215 billion in sales will be at risk due to patent expirations between 2015 and 2020.

Read more from the source: Why the Patent Cliff Is a Key Driver of Generic Drug Growth – Market Realist

From Humira to Cubicin, some multi-billion dollar drugs are set to be hit hard by patent expiries this year.  Read more: Act Now