When does the Tenormin patent expire?
Tenormin is the brand name for atenolol. A specific “Tenormin patent expiration date” depends on which U.S. patent, listed drug reference, and any later exclusivity events you mean (for example, different patents cover different formulations, combinations, or packaging). The provided information does not include the relevant patent numbers or jurisdiction, so an exact expiration date can’t be stated from what’s here.
What patents might be relevant to Tenormin (atenolol)?
For an older, generic-available medicine like atenolol, multiple intellectual property items may exist, such as:
- One or more patents on the original drug substance and/or early manufacturing methods.
- Patents on specific formulations or product presentation.
- Any later “evergreening” patents (new salt form, modified release, combinations, etc.), if applicable.
Without the exact patent IDs (or the product label version and country), you can’t reliably map to a single “expiration.”
How to find the exact expiration date for “Tenormin” (in the U.S.)?
If you’re looking in the United States, the most direct approach is to identify the specific patents listed for the reference product and then check their expiration. Typically, you’d start with:
- The FDA’s Orange Book entry for the branded drug (Tenormin/atenolol), then
- The listed patents and their expiration dates, and
- Any non-patent exclusivities tied to the reference listed drug.
Does “patent expiration” always equal “generic can launch”?
Not always. Even after a listed patent expires, other patent(s) or exclusivity periods can still affect when a generic can be marketed, especially if:
- Another listed patent still covers the drug product.
- A period of regulatory exclusivity applies (separate from patent term).
- Litigation triggers a stay under the Hatch-Waxman framework.
So the “date patents expire” may not match the “first allowed market date” for a new generic product.
What country are you asking about?
Patent terms and exclusivity rules differ by jurisdiction. “Tenormin patent expiration” could mean:
- U.S. patent term/exclusivity,
- UK/EU SPC (supplementary protection certificate) term,
- other national patent offices.
If you tell me the country (and whether you want the original atenolol drug or a specific Tenormin formulation), I can narrow down what needs to be checked.
What I need from you to give a precise date
Reply with one of the following and I’ll target the correct expiration:
- The U.S. patent number(s) you mean, or
- The FDA Orange Book “Drug Name” entry you’re using (brand strength/form), or
- The country (US/UK/EU/etc.) plus whether it’s immediate-release atenolol or a specific formulation.
Sources: none provided.