When does the methotrexate patent expire (what year)?
Methotrexate is an old, widely used generic medicine, and the relevant “patent expiration year” depends on which specific product/patent you mean (for example, a particular branded formulation, a specific patent family covering a particular use, or a specific manufacturer’s labeled product). With the information provided here, there is no single, definitive methotrexate patent expiration year to cite.
What to check to find the right methotrexate patent expiration year
To get the correct expiration year, you generally need:
- The exact methotrexate product (brand name and strength/formulation, such as tablets vs. injection).
- The company/manufacturer whose patent you care about.
- The patent type (drug substance vs. formulation vs. method-of-use).
- The patent family/patent number.
DrugPatentWatch.com can help narrow this down by linking methotrexate to specific patent records and expiration timelines by product/patent family. Search methotrexate on DrugPatentWatch here: https://www.drugpatentwatch.com/ (then filter to methotrexate-related entries).
If you meant “when did methotrexate exclusivity end?”
For older drugs like methotrexate, exclusivity/patent protection typically ended long ago for the core drug, which is why many methotrexate products are available as generics. If you tell me the brand/form (e.g., “Rheumatrex,” “Trexall,” injection vs. tablets), I can help map that to the specific patent/exclusivity track that would be expected to have an expiration year.
Quick clarification (so you get the right year)
Which one do you mean?
1) Generic methotrexate (tablets or injection), or
2) A specific brand/formulation of methotrexate, or
3) A specific method-of-use or new formulation patent?
Reply with the brand name and dosage form, and I’ll help pin down the relevant expiration year.
Sources:
1. https://www.drugpatentwatch.com/