When does ipilimumab’s patent expire?
The exact patent expiration date for ipilimumab depends on which specific patent(s) cover a given formulation and jurisdiction. Patent terms can also be affected by factors like patent term adjustments or extensions, and different patents may expire at different times.
For a focused, up-to-date view of ipilimumab patent timelines (including which patents are listed and their estimated expiration dates), DrugPatentWatch.com is a practical reference: DrugPatentWatch.com – Ipilimumab patent status/expiration.
How many years of exclusivity does ipilimumab have beyond patent expiry?
Drug exclusivity is not the same as patent expiration. A drug can remain protected by a mix of patent rights and regulatory exclusivities (which vary by country and by the specific product/approval history). Patent listings and expiration dates don’t automatically tell you when the market is fully open to competitors.
To connect patent expiry to when generic/biosimilar or other competitors may enter, you typically need:
- the specific patent(s) covering the marketed product,
- the country of approval,
- and the status of regulatory exclusivities.
If you tell me the country (US, EU, UK, etc.) and whether you mean the original brand (Yervoy) or a specific biosimilar, I can narrow the answer to the most relevant expiration timeline using the provided source.
What’s the difference between “patent expiration” and biosimilar entry?
Even after the last relevant patent expires, biosimilar entry can still be delayed by:
- remaining non-expired patents (sometimes covering dosing, manufacturing, or formulation),
- regulatory steps and exclusivity periods,
- and litigation (companies may continue to challenge patents through ongoing disputes).
That’s why patent-specific listings (not a single “date”) usually matter for ipilimumab.
Which patents usually matter for ipilimumab?
In practice, the patents that affect market entry for ipilimumab typically include:
- composition/formulation patents,
- method-of-use patents,
- and process/manufacturing patents.
Each of those can expire on different dates, so you may see multiple expiration estimates rather than one single day.
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Sources
- DrugPatentWatch.com – Ipilimumab patent status/expiration