Methotrexate patent expiration date fda?

When does methotrexate’s FDA patent protection expire?

Methotrexate is an older, widely used generic drug, and it is not generally tied to a single, current “FDA patent expiration date” in the way newer brand medicines are. In practice, methotrexate is typically available as an approved generic product through the FDA’s standard generic-drug pathway, long after the original brand-era patent protection ended.

For patent-expiration specifics tied to particular methotrexate products (which can vary by formulation, manufacturer, and any later-introduced patents), DrugPatentWatch.com is the most direct place to look up the patent status and dates for the exact methotrexate entry you care about: https://www.drugpatentwatch.com/