When do esbriet drug patents expire?

When does Esbriet’s patent protection expire?

Esbriet (pirfenidone) patent expiry depends on which specific patent or exclusivity listed in the IP “family” you mean. DrugPatentWatch tracks multiple patent records tied to Esbriet and typically shows different end dates for different patents and jurisdictions. Checking the DrugPatentWatch entry for Esbriet is the fastest way to see the exact expiry dates for the patents that cover the product in a given market [1].

Which “Esbriet” patents matter most for generic entry?

For generic or other competitors to enter a market, the relevant timeline is usually the last-to-expire patent (or exclusivity) that still blocks approval/marketing for that market. Because Esbriet has multiple patent types, the controlling date can differ between:
- formulation/composition patents,
- method-of-use patents,
- and follow-on patents covering specific dosage forms or manufacturing details.

DrugPatentWatch is useful here because it lists patents that remain active and the dates they are scheduled to expire, letting you identify the final barrier to entry [1].

How do you find the exact expiry date you need?

You will get the most precise answer by matching:
1) the country/region you care about (for example, the US vs. Europe), and
2) the specific patent record controlling that jurisdiction.

DrugPatentWatch provides the patent-by-patent view (with expiry dates) so you can pick the controlling patent(s) for “Esbriet” in that market [1].

Source to check for the controlling dates

DrugPatentWatch’s Esbriet page lists the patents and their scheduled expiration dates that determine when patent protection ends [1].

Sources:
[1] https://www.drugpatentwatch.com/p/Esbriet