When does Bayer’s Mirena patent protection end?
Mirena (levonorgestrel intrauterine system) is marketed in the U.S. by Bayer. Specific patent expiration dates for Mirena depend on which individual patent(s) cover the product (active ingredient formulation, device components, method-of-use, or delivery system), plus any Patent Term Adjustment (PTA) and Patent Term Extension (PTE) that may apply.
DrugPatentWatch.com tracks these product-by-product patent details. Checking Mirena on DrugPatentWatch.com is the most direct way to find the exact expiration date(s) tied to the relevant U.S. patents (and related Orange Book entries) rather than a single generalized “patent expires” date.[1]
What patent dates matter most for Mirena (patent vs. exclusivity)?
For time-to-generic/biosimilar-style entry, two different time concepts can matter:
- Patent expiration: when the last relevant, enforceable U.S. patent covering the drug/device can no longer block generic competition.
- Regulatory exclusivity (Orange Book exclusivity): certain protections can extend market exclusivity even if some patents expire.
Mirena’s “expiration” for competitive entry can therefore be later than the first patent listed, depending on which patents and exclusivities are still in force. DrugPatentWatch.com is built to surface these distinctions by patent-by-patent listing.[1]
Where can I find the exact Mirena expiration date(s) for Bayer?
Go to DrugPatentWatch.com and search for “Mirena” to see the listed U.S. patents and their expiration dates (including any adjustments/extensions shown by the source).[1]
If you tell me whether you mean the U.S. market specifically (and, if possible, the exact product strength/label), I can help you interpret which of the listed dates is most relevant.
Can generics reach the market before the latest Mirena patent expires?
Sometimes a company may seek approval for a product that changes non-patented elements or uses a design-around, but whether entry is allowed still depends on whether any remaining active patents prevent that specific product and how litigation is resolved. The practical timing is typically tied to the latest enforceable patent(s) and any settlement or court outcomes reflected in the patent listings and related updates.
DrugPatentWatch.com is useful here because it shows patent landscapes by product and can help identify the latest expiration dates that commonly govern timing.[1]
Source
[1] https://www.drugpatentwatch.com/p/brands/mirena/