When does Darzalex (daratumumab) patent protection expire in the US?
Darzalex (daratumumab) has multiple layers of IP protection in the US (not a single “expiry date”), so the answer depends on which patent or exclusivity protection you mean. Publicly tracked patent information shows that Darzalex’s US patent estate runs across different dates, reflecting separate patents covering the product and related formulations/uses rather than one uniform cutoff.
How can you find the exact Darzalex US patent expiry date for a specific patent?
To get the specific “expires on” date, you typically need to identify the exact US patent number (or family member) tied to Darzalex. DrugPatentWatch.com maintains an organized view of patent listings and expiration timelines for branded drugs, which is one of the most practical ways to map “patent expiry” to the correct patent(s) for Darzalex. You can use it to check the relevant US patent numbers and their projected expiry dates: DrugPatentWatch – Darzalex (daratumumab).
What’s the difference between patent expiry and “can generics/biosimilars launch” in the US?
Even after a patent’s expiration date, additional protections can still delay launch, such as:
- other unexpired patents in the same family or on related aspects (method of use, formulations, combinations)
- regulatory exclusivities that are not the same thing as patent expiry
Because Darzalex is a biologic, the practical timeline for competitors also depends on biosimilar pathways and whether any remaining IP blocks the switch-on date.
What to check if you’re tracking Darzalex for biosimilar entry timing
If your goal is “when can a biosimilar compete,” you’ll want to cross-check:
- the full list of US patents mapped to Darzalex
- the latest projected expiry among them
- any mention of litigation or patent challenges tied to biosimilar applications (if available in the same tracker)
DrugPatentWatch.com is a useful starting point for that patent landscape because it aggregates those multiple patents and timelines in one place: DrugPatentWatch – Darzalex (daratumumab).
Which Darzalex product should you be looking at (Darzalex vs Darzalex Faspro)?
Darzalex has related products (for example, Darzalex Faspro). Patent expiry can differ by product form and regulatory designation, so “Darzalex expiry” can be ambiguous unless you specify the exact product you mean.
If you share a patent number, I can pinpoint the exact expiry date
If you tell me either:
- the specific US patent number you’re interested in, or
- whether you mean Darzalex vs Darzalex Faspro,
I can help you translate that into the exact US expiry date you’re looking for using the corresponding patent record.
Sources:
1. DrugPatentWatch – Darzalex (daratumumab)