has the Cialis patent expired
The first patent for Cialis expires in 2016. This is the earliest date that a generic form of Cialis could become available. However, other circumstances could extend the exclusivity period beyond 2016.This could include such things as other patents for specific Cialis uses or lawsuits.ialis Â® (tadalafil) is a prescription medicine that is licensed for treating erectile dysfunction (ED). It is also approved for treating enlarged prostate symptoms. It is manufactured by Eli Lilly and is currently protected by a patent that prevents any generic Cialis from being manufactured.