When does the Tenormin (atenolol) patent expire?
Tenormin is the brand name for atenolol. Patent expiry for a medicine is tied to the specific patent(s) covering the drug’s active ingredient and each later-protecting formulation, use, or process. Because different countries have different patent filings and different timelines, the exact expiry date depends on the jurisdiction and the specific patent being referenced.
Is there a single “Tenormin patent expiry date,” or multiple patents?
There are usually multiple layers of protection:
- The original composition-of-matter (active ingredient) patents.
- Possible follow-on patents (for specific salts, formulations, or manufacturing processes).
- Country-specific secondary patents and legal actions that can extend market exclusivity even after first patents expire.
Without the patent number (or at least the country), it is not possible to give one definitive expiry date from the information provided here.
How can I find the exact Tenormin patent expiry for my country?
To get a precise expiry date, you typically need one of the following:
- The patent number(s) for atenolol/Tenormin in your country, or
- Access to the relevant national patent register (for example, the UK IPO register, the US USPTO, or the European Patent Register), then filter to the family covering atenolol/Tenormin and read the last active term/claims status.
If you tell me the country (US, UK, EU, etc.) and whether you mean brand Tenormin specifically or atenolol generally, I can narrow down what to look for (e.g., which patent families usually govern branded timelines).
Does market exclusivity (not just patents) affect availability?
Yes. Even after the last core patent expires, regulatory market exclusivity rules can still affect:
- When generic manufacturers can market under certain application pathways, and
- When branded competition is permitted in a given regulatory framework.
To answer accurately, you need the country and the relevant regulatory regime.
What I need from you to give an exact expiry date
Reply with:
1) Your jurisdiction (e.g., US or UK), and
2) Whether you want the expiry for the branded product “Tenormin” specifically or for “atenolol” generally,
and I’ll provide the specific patent expiry target(s) you should check.