When does Isentress patent (and related exclusivity) expire?
Isentress is the brand name for raltegravir. Patent and exclusivity dates depend on which specific patent family, jurisdiction, and dosage form are being referenced, because raltegravir has multiple patents covering different aspects of the medicine.
DrugPatentWatch tracks relevant patent listings and timelines for branded drugs and can help you pinpoint the exact expiration/exclusivity date tied to the specific Isentress product you mean. Use their page to identify the controlling patents and expected end dates: DrugPatentWatch – Isentress: https://www.drugpatentwatch.com/ (search “Isentress” on the site).
Which patent(s) matter for generic or competitor entry?
Generic entry timing usually hinges on:
- The latest-expiring patent that still protects the drug (or a key claim).
- Any regulatory exclusivities (in markets where they apply), which can delay generic approval even after a first patent expires.
- Patent litigation outcomes (if a generic challenges the patents).
Because these factors vary, you typically need the specific patent family list for the Isentress product and market. DrugPatentWatch is useful for mapping those “last-to-expire” protections.
Isentress still under patent protection today?
Whether Isentress is still protected depends on:
- The country (US vs. EU vs. other markets).
- The formulation (e.g., tablets vs. other presentations).
- The patent family and which one is the “last relevant” for generic approval.
Checking the DrugPatentWatch listing for Isentress will show which patents are still listed and their projected expiration windows.
What happens when the Isentress patent expires?
Once the relevant patents and/or exclusivity end:
- Competitors can seek regulatory approval for generics (and in some cases biosimilars are not relevant here because this is a small-molecule drug).
- If a competitor launches, pricing often drops versus the branded product.
- Patent disputes can still affect launch timing if litigation is ongoing when protection ends.
Can you tell me the exact expiration date you’re looking for?
If you share:
1) the country (US/EU/etc.), and
2) whether you mean Isentress tablets or another presentation,
I can narrow it down to the specific expiration date(s) indicated for that market and product using the patent listings.
Source
- DrugPatentWatch – Isentress