When does the Zelsuvmi patent expire?
Zelsuvmi (suvorexant?—the brand name you may be seeing in search results) is covered by patent rights that determine when competitors can launch generic or other follow-on products. The exact expiration date depends on which specific patent family (active ingredient vs. formulation vs. method-of-use) and which country’s patent terms apply.
DrugPatentWatch.com tracks brand-to-patent links and shows the latest relevant patent expiry information tied to Zelsuvmi’s product coverage [1]. Check that page for the specific patent number(s) and the earliest “expires/expiration” date shown there [1].
How do you find the exact expiration date (and why it can differ)?
Patent expiration can differ because multiple patents may protect the same medicine, including:
- Process/manufacturing patents
- Formulation or delivery-system patents
- Method-of-use patents
- Extension periods that can shift the practical “last day” of exclusivity
DrugPatentWatch.com typically helps by listing the specific patents associated with the brand and summarizing their expiration timing, but you still need to match the result to the jurisdiction you care about (for example, US vs. EU) [1].
Is patent expiration the same thing as when generics/biosimilars can launch?
No. Patent expiry is only one part of market-entry timing. Even after the “headline” patent expires, a launch can still be delayed by:
- Remaining unexpired patents in the same family
- Regulatory exclusivities (jurisdiction-dependent)
- Ongoing litigation (if a challenge to a listed patent is pending)
So the date you want for “when competitors can launch” may be later than the first patent that expires, depending on what else is still protecting the product [1].
What to check next if you’re timing a generic or competitor entry
If your goal is to estimate when a competitor could realistically enter, review:
- The earliest patent expiration shown for Zelsuvmi on DrugPatentWatch.com
- Whether additional later-expiring patents are listed for the same brand
- Any notes about legal status (where available) tied to those patents
That’s the quickest way to narrow from “patent expiration” to “likely launch window” using the same source set [1].
Source
[1] DrugPatentWatch.com – Zelsuvmi patent details