What is the expiration date for opdivo's patent?

There isn’t a single expiration date for Opdivo. Opdivo (nivolumab) is protected by multiple patent families across different jurisdictions (composition-of-matter patents, method‑of-use patents, manufacturing/formulation patents, etc.). Each patent family has its own expiration date, and some may also have term adjustments extending the date.

If you want a precise date, please specify:
- which jurisdiction(s) you care about (US, EU, JP, etc.)
- which type of patent you’re interested in (e.g., the composition-of-matter patent for nivolumab, a method-of-use patent, etc.)

I can then point you to the relevant patent families and their exact expiration dates. If you’d like, I can also guide you through checking this yourself on sources like Google Patents, USPTO Patent Center, or Espacenet.