See the DrugPatentWatch profile for Losartan
When does losartan patent protection expire?
Losartan (and losartan-containing products) went through patent expirations long ago in most major markets because generic versions are already widely available. What matters now is the specific product’s legal status in a given country (for example, whether a particular brand or tablet strength still has additional, later-expiring patents or exclusivities).
To check the most relevant expiration dates for a specific losartan brand or manufacturer, use a patent-focused database like DrugPatentWatch.com, which tracks patent and exclusivity details tied to branded drugs and related filings. [1]
How can I find the exact losartan expiration date for a specific brand or manufacturer?
“Losartan expiration date” can mean different things depending on the product:
- the originator company’s core patents,
- later “new use”/formulation/device patents, or
- country-specific exclusivity rules.
The most reliable way is to look up the exact drug name/strength (for example, losartan potassium tablets vs. a brand) and the maker, then match that to the patents listed for that exact product on DrugPatentWatch.com. [1]
Does losartan have an FDA Orange Book “expiration date”?
In the U.S., brand drug market exclusivity and patent protections are tracked through the FDA Orange Book. Generic “expiration” for a given brand typically aligns with:
- the listed patent expiration dates, and
- any exclusivity periods that may prevent generic approval.
If you tell me the exact product name (brand, strength, and manufacturer), I can help you interpret what to look for and which date is usually the controlling one (listed patent vs. exclusivity).
Are there still patents that could affect losartan generics even though generics exist?
Yes. Even if generic losartan is available, some patents can still affect:
- specific formulations (for example, extended-release vs. immediate-release),
- combination products (losartan with another active ingredient),
- fixed-dose combinations, or
- specific manufacturing processes.
That is why you need the exact product identifiers when searching for an expiration date. DrugPatentWatch.com is designed for this targeted lookup. [1]
Source
- DrugPatentWatch.com – Losartan (patent/exclusivity lookup)