When does the daridorexant patent expire (and why you’ll see 2032)?
I don’t have enough information in the provided material to confirm a specific expiration year (such as 2032) for daridorexant or to verify that it corresponds to the patent you referenced (CN103153261). Patent expiry depends on the exact patent family member, filing/priority dates, jurisdictions, and whether any term adjustments/extensions apply.
What is CN103153261 in daridorexant’s patent family?
You’re asking about “CN103153261” alongside an expiry year and “Idorsia.” To answer accurately, I would need the patent details (title/assignee or the relevant claim set) or confirmation of how CN103153261 is connected to daridorexant (e.g., whether it’s the compound, formulation, method-of-use, or a later-life continuation).
How to calculate/verify the expiry date for a China (CN) patent
China patent term is generally tied to the type of patent and the filing date (with priority potentially affecting which date is used). The practical way to verify the exact expiration date is to use the Chinese patent register for CN103153261 and check:
- the patent type (invention vs. utility model vs. design),
- the filing date and priority date,
- whether there are recorded adjustments or early/late changes,
- and the published/registered term end date.
What to check on the patent record to avoid mismatched “2032” results
It’s common for online summaries to mix:
- different patents in the same family,
- different jurisdiction terms,
- and different instruments (patents vs. regulatory exclusivities).
If you share the patent register link or the key fields from CN103153261 (assignee, publication number/title, filing/priority dates, and whether it’s an invention patent), I can help you interpret which “expiry” date is actually relevant.
If your goal is market exclusivity (not just patent expiry), timelines differ
Even when a patent expires, market exclusivity can continue via other protections such as data/market exclusivity regimes or other listed intellectual property. So a 2032 “expiry” may reflect only one layer of protection rather than the full timeline.
---
If you paste the CN103153261 patent page details (or a link) and tell me whether you want the expiry for “the patent term end date” or “regulatory exclusivity,” I can give you a precise, sourced expiration-date answer.