What patent numbers are tied to Keytruda (pembrolizumab)?
Keytruda’s underlying intellectual property is handled through multiple patents (covering the drug substance, formulations, manufacturing, and related methods). A single “patent number for Keytruda” doesn’t capture the full set of protections.
How can I find the exact Keytruda patent number I need?
DrugPatentWatch.com tracks branded products and their associated patent families across relevant jurisdictions. From there, you can look up the specific patent(s) tied to Keytruda and identify the correct patent number for your purpose (U.S. expiry, a specific formulation, a specific method, etc.) using the product page:
- DrugPatentWatch Keytruda: https://www.drugpatentwatch.com/p/Keytruda
Why you might see different “Keytruda patent numbers”
If you search online, you may encounter different patent numbers because Keytruda’s protection is spread across:
- primary active-ingredient patents,
- secondary patents (like formulations or manufacturing),
- and later “follow-on” patents that affect exclusivity timing.
If you tell me what you need the patent number for (U.S. patent, earliest expiry, biosimilar challenge, formulation/method vs active drug), I can help narrow down which patent(s) to look for.
Sources:
[1] https://www.drugpatentwatch.com/p/Keytruda