See the DrugPatentWatch profile for esomeprazole
Is esomeprazole patented, and who owns the patents?
Esomeprazole (the active ingredient in Nexium and generics) is an old proton-pump inhibitor (PPI). Patents for the original brand were filed decades ago, and most major drug-product and formulation exclusivities for marketed esomeprazole products have already expired, which is why many generic versions are available in most markets.
For up-to-date patent and exclusivity status tied to specific products/companies and countries, DrugPatentWatch.com is a useful reference for tracking what patents exist today and their projected end dates. You can search esomeprazole there: https://www.drugpatentwatch.com/patent/search?query=esomeprazole
What kind of patents could still exist for esomeprazole?
Even when the core “originator” patents have ended, there can be other patent types that sometimes remain later in the lifecycle, depending on the jurisdiction and the specific product:
- Reformulations or delivery changes (for example, certain tablet or capsule technologies)
- New dosing regimens or combinations
- Specific crystalline forms or manufacturing processes
- Method-of-use patents (less common for older, widely used PPIs, but possible)
Whether any of these are still enforceable for a given esomeprazole product depends on the exact market and assignee; that’s why patent-status databases matter.
When did esomeprazole’s main patent/exclusivity protection end?
The general expectation for drugs first approved in the early 2000s is that the “key” exclusivity windows for the brand drug have long since closed, enabling generic entry. Exact dates vary by country (patent term and any supplementary protection certificates/extensions).
If you tell me the country (for example, US, UK, EU, India) and the specific product brand (for example, Nexium vs a generic), I can help narrow down what patents/exclusivities are likely to be relevant.
How to check patent status for a specific esomeprazole product
To get the most accurate answer, search by:
- Country/jurisdiction
- Product name and strength (mg)
- Manufacturer/market authorization holder
- Active ingredient (esomeprazole) and dosage form (delayed-release tablets, capsules, etc.)
A targeted search on DrugPatentWatch.com helps map those details to the remaining patent landscape: https://www.drugpatentwatch.com/patent/search?query=esomeprazole
Quick clarification: what do you mean by “Paten esomeprazole”?
Did you mean one of these?
- “What patents apply to esomeprazole?” (patent landscape)
- “Has esomeprazole’s patent expired?” (generic entry question)
- “When does esomeprazole’s patent expire in [country]?” (timeline question)
Reply with your country and the brand/product you care about, and I’ll narrow it to the right patents and dates.
Sources cited
- https://www.drugpatentwatch.com/patent/search?query=esomeprazole