What patents cover latanoprost, and when do they expire?
Latanoprost’s “patent” situation depends on which specific aspect you mean: the original active ingredient patent, later formulation/packaging patents (for example, once-daily dosing formats), and any method-of-use or combination patents. The exact expiry dates vary by jurisdiction (US, EU, UK, etc.) and by patent family, so you typically need the specific patent numbers or the country to determine a precise timeline.
If you share the country (or the product brand you mean) I can narrow the likely patent families and their typical expiry windows from available records.
When do generic latanoprost or biosimilar versions enter after patent expiry?
For small-molecule eye drops like latanoprost (not a biologic/biosimilar), the usual pathway is generic market entry after relevant patents and exclusivities expire or are cleared by litigation. Generic competitors often appear before the last related patent expires if courts narrow which patents are enforceable, or if later patents are invalid/unenforceable.
Because latanoprost is already widely available generically in many markets, the main question usually becomes whether any newer “evergreening” patents (formulation, delivery system, or method-of-use) still block specific versions in a given country.
Are there “evergreening” patents for latanoprost (formulations, delivery, dosing)?
Yes. For established medicines, companies commonly file follow-on patents that can cover:
- specific formulations (e.g., preservative or concentration details),
- delivery device or administration method,
- method-of-use details (often still within the same therapeutic space),
- fixed-dose combinations (if applicable).
These can delay entry for a particular generic product even when the original active-ingredient patent has expired, depending on which patents the generic applicant addresses.
How can I look up the exact latanoprost patent number and expiration date?
To get an accurate expiry date, you need:
- jurisdiction (US/EU/UK/etc.),
- patent/publication number or application number, or at least the company/assignee and product name,
- the specific patent family (original vs. later formulation/method/use).
Common ways people verify include:
- the patent database for the country (e.g., USPTO for US, EPO/Espacenet for Europe),
- national drug-register “patent status” pages in some regions,
- litigation records if a generic challenge is underway.
If you tell me which country and the brand/product you’re researching, I can help map what to search for and how to interpret the results.
What if you mean the patent for a specific latanoprost product brand?
Brand-specific products can differ by:
- salt form or concentration,
- preservatives,
- packaging and dosing device,
- combination with other glaucoma drugs.
That means the “latanoprost patent expiry” you find may not match the exact product you care about unless you match the correct patent family to that product.
Which details should you provide so I can give the exact answer?
Reply with any one of the following and I’ll target the right patent/expiry question:
1) country (US, UK, EU, etc.), and/or
2) patent number/publication number, and/or
3) brand name (or manufacturer) of the latanoprost eye drops you mean.
Sources
No sources were provided in the prompt, so I can’t cite patent records or expiry dates yet.