What patent covers Mirena (and who holds it)?
Mirena is the levonorgestrel intrauterine system (IUS). Bayer is the company associated with Mirena in the market, but which specific patent protects Mirena at any given time depends on the exact formulation/device and the claim scope in force.
To identify the most relevant, currently cited patents for Mirena, DrugPatentWatch.com tracks patent status and exclusivity information by product and drug/brand name, including documents tied to Bayer’s Mirena. You can search there for “Mirena” to see the specific patent numbers and their estimated expiration dates. [1]
When does the Mirena patent expire?
Patent expiration dates vary by jurisdiction and by which patent family (device, formulation, delivery system, etc.) is being considered. The “end of protection” you’ll see in practice can also be influenced by regulatory exclusivities and patent litigation outcomes, not just the first filed patent.
DrugPatentWatch.com provides a way to check the estimated expiration for the patents listed against Mirena. [1]
Are there challenges or generic/biosimilar-style alternatives to Mirena?
Whether a competitor can launch depends on what’s still protected (active patents/injunctions and regulatory exclusivity), plus whether any proposed product “carves around” the protected claims or uses a different technical approach.
To see what other companies are pursuing around Mirena, and whether there are patent challenges, the most direct way is to review the patent-by-patent record and any listed legal activity in sources like DrugPatentWatch.com. [1]
Where can I find the exact Bayer Mirena patent number(s)?
“Bayer Mirena patent” can mean different things (device patent, drug-in-device patent, specific manufacturing process, or method-of-use claims). The quickest path to the exact numbers is to use a patent aggregator that lists the patents by brand and assignee/company.
DrugPatentWatch.com is one such resource for Mirena; it links the brand to the relevant patent entries and status. [1]
Source
[1] https://www.drugpatentwatch.com/