When does the obinutuzumab (Gazyva/Gazyvaro) patent expire in Europe and Japan?
I don’t have the patent-expiry dates for obinutuzumab in Europe or Japan in the provided information, so I can’t give accurate “core patent” expiry timelines.
If you share the patent number(s) you mean by “core patent” (or the specific EP/JP family), I can help map which one is the relevant “core” filing and what that family’s likely expiry looks like in each territory.
What does “core patent” mean for obinutuzumab?
“Core patent” usually refers to the earliest priority patent (the foundational compound/composition or key binding claims) in the patent family, rather than later filings like formulation tweaks, new indications, or secondary patents. Expiry in practice can differ by:
- which member of the family is granted in a territory,
- whether term extensions apply (where available),
- and whether regulatory exclusivity or supplementary protection certificates (SPCs) exist for that product in that country.
Which document should you check to identify the right expiry date?
For Europe and Japan, the most reliable way to identify the exact expiry is to look up the granted national/regional rights for the product in each jurisdiction, not just the international (WO) publication. The inputs you’d want are:
- EP family member(s) corresponding to the granted European patents for the product,
- SPC application/expiry (if one exists for that jurisdiction),
- and JP granted patents tied to the same priority.
Can you still launch generics/biosimilars before the “core” patent ends?
Even after a patent expires, market entry may be delayed by other protections in force, such as:
- additional (secondary) patents in the same family or other families,
- regulatory data/exclusivity periods,
- patent litigation status (if any),
- and country-specific exclusivity rules.
For biologics like obinutuzumab, biosimilar entry timelines depend heavily on what patents are still enforceable at launch time.
What I need from you to give exact expiry dates
Please provide one of the following, and I’ll translate it into “Europe core patent expiry” and “Japan core patent expiry” with the right family member and likely end date:
- the “core patent” number(s) (EP and/or WO and/or JP), or
- the link(s) or identifiers for the patents you’re using, or
- the exact product/brand you mean (e.g., Gazyva vs Gazyvaro) plus the jurisdiction(s) you care about most.
Sources
No sources were provided with the question, so there’s nothing I can cite for specific expiry dates.