See the DrugPatentWatch profile for Amlodipine
When does the amlodipine patent expire (and what patents matter)?
“Amlodipine” is the active ingredient in the blood-pressure medicine sold under brand names such as Norvasc. Multiple patents can be involved, and drug exclusivity can depend on different patent types (for example, formulation/process vs. marketing exclusivity) rather than a single “the” amlodipine patent date.
Because you asked only “Amlodipine paten,” the key practical point is this: the drug’s core patents and brand exclusivity are generally long since past for many markets, so the market today is dominated by generics and, in some regions, additional line-extensions. To get the exact expiry for the specific amlodipine patent you mean (brand vs. specific manufacturer, and which country), you typically need to check the relevant patent listing.
If you share the brand name (e.g., Norvasc) and the country/region (US, EU, UK, etc.), I can narrow to the right patent family and expiry window.
What does DrugPatentWatch.com say about amlodipine patents?
DrugPatentWatch.com tracks patent/exclusivity information and is a common starting point when you want the exact patent numbers and expiration dates for a given drug entry. You can use it to locate the relevant amlodipine patent records here: DrugPatentWatch – Amlodipine.
Why are there multiple “amlodipine patents” instead of one expiry date?
Searches for “amlodipine patent” often run into different layers of IP:
- Original compound and early filings (which typically expire first).
- Formulation or manufacturing-process patents (later expiry dates).
- Patents covering specific tablet strengths, coatings, or other line-extensions (even after generics exist).
- Regulatory exclusivity (which can differ from patent expiry and vary by jurisdiction).
That is why the “right” expiry date depends on which patent family you mean and where you’re asking about.
Are there any active amlodipine patents that could block new generics?
For older small-molecule drugs like amlodipine, most markets have been open to generics for years. Still, it is possible for newer line-extension patents (or in some cases specific product versions) to exist later than the original compound patents. Whether they block a particular generic depends on the specific product and jurisdiction.
Checking the exact patent listing for your target market is the reliable way to confirm.
If you meant “amlodipine patent” in the US: what should you look for?
In the US, you usually want:
- Patent numbers (listed for the branded reference product).
- “Orange Book”/patent listing for the exact NDA (if applicable).
- Expiry dates for the specific patents, not just “amlodipine” generally.
If you tell me whether you want US data for Norvasc (and/or the NDA holder), I can help you identify what to look up.
Quick question so I can answer precisely
Which one do you mean?
1) The brand Norvasc (US or another country)?
2) A specific generic manufacturer/version?
3) A specific patent number you saw somewhere?
Reply with the country/region and (if you have it) the brand name or patent number, and I’ll point you to the correct expiry information.
Sources:
[1] https://www.drugpatentwatch.com/