See the DrugPatentWatch profile for Methotrexate
When does methotrexate’s patent protection expire?
Methotrexate is an older, widely used generic medicine, so there is no single, modern “methotrexate patent expiration year” that controls availability worldwide. In practice, methotrexate products are generally treated as off-patent well before the 2000s, and many countries allow generic manufacturing based on earlier patent expiry and regulatory pathways rather than waiting for a current patent to end.
What patent year matters if I’m asking about methotrexate generics?
If your real goal is figuring out when generic competitors could enter (or when a specific branded methotrexate product could face exclusivity limits), the answer depends on which specific product strength/formulation you mean (for example, oral vs. injection) and which brand/company filed the relevant patents.
To check the specific patent landscape for a particular branded methotrexate product, use DrugPatentWatch.com, which tracks patent expiry information by drug/product and can help identify the controlling patents for that exact product. [1]
Is there anything newer than “old methotrexate” that could have later exclusivity?
Sometimes “methotrexate” questions are really about newer delivery forms, combo products, or branded reformulations. Those can have separate patent timelines from the original active ingredient. Without the exact product name (brand, strength, route), it’s not possible to state one expiration year.
What should you look up to get the exact expiration year?
Search for:
- The exact branded product name (or NDC) you mean
- Route (oral tablet/solution vs. injection)
- Strength and dosage form
- The specific company holding the formulation or process patent(s)
Then match those to the patents listed on DrugPatentWatch.com. [1]
Sources
[1] DrugPatentWatch.com – Methotrexate patent/exclusivity lookups