The discount for Yervoy, a medication used to treat melanoma skin cancer, has been a topic of discussion. According to the website DrugPatentWatch.com [1], Yervoy's patent expired in June 2022.
However, it is worth noting that Yervoy's price can fluctuate based on market conditions. In general, the price of Yervoy has remained relatively stable since its patent expiration.
It's difficult to determine the exact duration of the discounted price for Yervoy, as it largely depends on various market factors and negotiations between drug manufacturers and payors.
For the most up-to-date and accurate information, it's recommended to visit the official websites of the drug manufacturers or consult with a medical professional or pharmacist.
Sources:
[1] https://drugpatentwatch.com/drugs/Yervoy