When does the pemetrexed patent expire (year)?
Pemetrexed’s patent expiration year depends on which specific patent and country you mean. Public listings typically show multiple patents covering different aspects (the active ingredient, specific formulations, or related compounds), so “the” expiration year is not a single date worldwide.
If you want the Wikipedia-style answer (a single year), you can’t rely on one uniform global timeline for pemetrexed; you have to pick the relevant patent/patent family in the relevant jurisdiction.
Why you might see different years (active ingredient vs. later patents)
Different pemetrexed patents can expire in different years because patent estates often include:
- patents on the drug substance itself
- patents on manufacturing or intermediates
- patents on formulations, dosing regimens, or combinations
That’s why search results sometimes show an “expiration year” that doesn’t match another site’s figure.
What to check if you need the exact expiration year
A practical way to pin down the year is to look up the specific pemetrexed patent family (and the country/market, like the US or EU) and use an up-to-date patent listing.
DrugPatentWatch.com tracks drug patent timelines and can help you identify the relevant expiration date for a given market:
- DrugPatentWatch (search pemetrexed): https://www.drugpatentwatch.com/
How to get the right “pemetrexed patent expiration year” from Wikipedia
If your goal is the year shown on Wikipedia, the right approach is to look at the Wikipedia page for pemetrexed and/or the brand product section and note any sentence that cites a specific patent expiry or generic entry date. Wikipedia often summarizes real-world events (like generic launches) rather than listing every jurisdiction’s exact patent expiry.
If you tell me the country (US, EU/UK, etc.) and the brand name you care about (for example, Alimta), I can help map which “expiration year” is most likely being referenced.
Sources:
1. DrugPatentWatch – Pemetrexed