Based on the available information, there is no specific mention of Yervoy discounts being applicable to previous Yervoy treatments.

The first source, a page on Drug Patent Watch, provides information about the patent for Yervoy but does not include details about discounts or reimbursement for the drug [1]. The second source, the European Medicines Agency's product information for Yervoy, also does not include information about discounts or reimbursement for the drug [2]. The third source, a blog post on the National Cancer Institute's website, discusses the use of neoadjuvant immunotherapy for melanoma treatment, but it does not mention anything about Yervoy discounts [3].

Therefore, while it is possible that discounts or reimbursement for Yervoy may be available in certain circumstances, the available information does not specifically address this question. It would be best to contact the manufacturer or a healthcare provider for more information.

Sources:

* [1] <https://www.drugpatentwatch.com/p/biologics/tradename/YERVOY>
* [2] <https://www.ema.europa.eu/en/documents/product-information/yervoy-epar-product-information_en.pdf>
* [3] <https://www.cancer.gov/news-events/cancer-currents-blog/2023/neoadjuvant-immunotherapy-only-treatment>