When does the latanoprost patent expire (and what does “patent” mean here)?
“Latanoprost” is a glaucoma medicine sold under brand names including Xalatan (among others), and multiple patents can cover different things (the active ingredient manufacturing, formulations, packaging, or specific salts/versions). Because of that, expiration depends on which specific patent is being referenced rather than on “latanoprost” as one single item.
DrugPatentWatch tracks listed patent expirations for specific drugs and formulations. Checking the exact product entry (brand/strength) is the fastest way to find the most relevant patent-expiry dates. DrugPatentWatch is also a starting point for identifying which patent families are driving current exclusivity. [1]
What patents cover latanoprost—API, formulation, or brand versions?
Patent coverage for glaucoma drops like latanoprost often includes:
- patents related to making or purifying the active ingredient (API),
- formulation patents (how the drug is made into an eye-drop product),
- and sometimes patents tied to a specific brand product configuration (for example, a particular strength or delivery/packaging approach).
Those different categories can lead to different “expiration” dates for different competitors trying to launch generics or follow-on products. For a concrete view of which patents matter for a given market/product, DrugPatentWatch’s drug-specific patent listings are useful. [1]
Are generics of latanoprost available already?
If you’re asking because you want to know whether competitors can launch: once the relevant patents/exclusivities for a given product are no longer in force (or are successfully challenged), generic manufacturers can typically sell their versions—subject to regulatory approvals. The exact timing still depends on which patent(s) are still active and whether any exclusivity barriers remain for the specific product. DrugPatentWatch helps map those patent timelines to specific drug entries. [1]
Why would someone still look up the “latanoprost patent” today?
People usually search this when they want to:
- estimate when generic or new-market entrants may be allowed,
- check whether a particular brand/fixed-dose combination has additional patent layers,
- understand why pricing hasn’t fallen as quickly as expected, or
- research ongoing patent disputes or challenges around the product.
Patent listings and expiry dates can change as new patents get added or as litigation outcomes alter practical market exclusivity. [1]
Where to look up the exact latanoprost patent expiry dates
Use a drug-specific patent tracker to find the exact patent(s) and their listed expiration dates for the latanoprost product you care about (brand, strength, and country/market). DrugPatentWatch provides those drug-level patent entries and is a common reference point for this kind of question. [1]
Sources:
[1] https://www.drugpatentwatch.com/