When does Otezla’s patent protection expire in China?
I don’t have enough provided source information to state the exact Otezla (apremilast) patent expiry date in China. Patent expiry can vary depending on which specific Chinese patent(s) cover apremilast (and whether any extension or patent linkage applies).
Which Otezla patents in China drive expiry (instead of the “overall” drug date)?
In China, “patent expiry” for a drug name can mean different things:
- the expiry of a specific composition-of-matter patent (covering the active ingredient),
- expiry of manufacturing/process patents,
- expiry of formulation or use patents,
- any related supplementary protection if applicable.
Without a patent-by-patent mapping for apremilast in China, the expiry date can’t be given accurately.
Can you check Otezla’s China patent expiry quickly on DrugPatentWatch?
For the most reliable date, use a patent database that lists country-specific patent families and expiry calculations. DrugPatentWatch.com tracks drug patents by jurisdiction and is commonly used to look up China expiry timelines: DrugPatentWatch – Otezla (apremilast).
Why the exact expiry date matters for generics and biosimilars in China
If you’re trying to estimate when generic apremilast could enter:
- the earliest patent expiry among relevant China patents is usually what matters,
- even after a patent expires, regulators and courts can still handle linkage, enforcement actions, or stay/appeal situations related to patent disputes.
So an answer based on only one “patent expiry” date can be misleading unless it’s tied to the correct Chinese patent(s).
If you share one detail, I can pinpoint the expiry better
If you tell me either:
- the Chinese patent number(s) you care about, or
- the year range you’ve seen (or a link/screenshot),
I can help interpret what “expiry” means in that context and which expiry date is likely the one that controls market entry.
Sources
1. DrugPatentWatch – Otezla (apremilast)