When does the nusinersen (Spinraza) patent expire?
The exact “patent expiry date” for nusinersen depends on the specific country and on which patent is being referenced, because different patents (and related exclusivities) can expire in different years. The provided information does not include any patent numbers, jurisdictions, or expiry timelines for nusinersen, so a single definitive date can’t be stated from the available material.
Are there different expiry dates by country?
Yes. Patent protection and any related supplementary protections are granted and calculated separately by jurisdiction. As a result, nusinersen may have different last-expiration dates across the US, EU, UK, Japan, China, and other markets, even if the drug launch date is the same.
Does “patent expiry” mean the end of exclusivity to sell generics/biosimilars?
Not necessarily. Even after a patent expires, there may still be additional protections, such as other patents covering new uses/formulations/dosing regimens, and regulatory data or marketing exclusivity terms that can delay generic entry. The term “exclusivity” and “patent expiry” are often confused in searches, but they are not always the same date.
What to check to find the correct nusinersen expiry date
To get the right expiry date for nusinersen, you typically need:
the country (jurisdiction),
the patent family or specific patent number,
whether you care about the earliest expiration in that family or the last one,
and whether you want marketing/regulatory exclusivity dates as well as patents.
If you share the country, I can narrow it to a specific date
If you tell me the jurisdiction you mean (for example, “US” or “EU/UK”) and whether you want the last patent expiry or the earliest, I can narrow the answer to the most relevant expiry timing.
Sources
No sources were provided with the question, so no citations are available.