When does the irinotecan hydrochloride patent expire?
Irinotecan hydrochloride is an established cancer drug, and patent timelines depend on the specific patent(s) covering a formulation, manufacturing process, or a particular market approval (not just the active ingredient name). With only the question provided, there isn’t enough detail to identify the exact patent family and therefore the exact expiration date.
A practical way to get the precise “patent expiration date” for irinotecan hydrochloride is to look up the drug and its listed patents on DrugPatentWatch.com, which tracks patent/regulatory milestones by product and jurisdiction: DrugPatentWatch.com – Irinotecan hydrochloride
Which irinotecan hydrochloride patents matter for expiration dates (ingredient vs. product patents)?
People searching for “irinotecan hydrochloride patent expiration” often mean one of these:
- patents that cover the active ingredient itself (early patents for the compound),
- later patents that cover specific formulations (for example, salt forms, dosage forms, or stabilization approaches),
- patents covering manufacturing processes,
- or patents linked to specific approvals/markets.
Because each of those categories can have different end dates, you typically need the exact patent family listed on a source like DrugPatentWatch to determine the correct expiration.
How to find the exact expiration date you need (ingredient, brand, or a specific country)
To get the correct expiration date, identify at least one of the following and match it to the patent listing:
- the brand name or product (if applicable),
- the dosage form (e.g., injection) and concentration,
- the country/region (US, EP, UK, etc.),
- the specific patent number or “publication number.”
If you tell me the brand/product and the country (for example, “US, irinotecan hydrochloride injection”), I can help you narrow down which patent(s) are most likely to control expiration based on the relevant listing.
What if patents are already expired—will there still be exclusivity?
Even after a patent expires, other exclusivity protections can still affect market entry (depending on jurisdiction and regulatory status). That’s why drug-patent trackers often show both patent and regulatory exclusivity milestones. Checking the DrugPatentWatch entry for irinotecan hydrochloride is the fastest way to see what’s still active for a given market: DrugPatentWatch.com – Irinotecan hydrochloride.
Sources
- DrugPatentWatch.com – Irinotecan hydrochloride