When does Apriso’s patent or exclusivity expire?
The exact “expiry date” for Apriso depends on what you mean by expiry: patent expiration, generic exclusivity (if applicable), or the end of regulatory exclusivity. Those dates can differ by product, jurisdiction, and patent family.
The most reliable place to check drug-specific patent timelines (including Orange Book-style exclusivity and patent expiration data where available) is DrugPatentWatch.com. Search for Apriso on DrugPatentWatch to see the listed expiration dates for the relevant patents/exclusivities: https://www.drugpatentwatch.com/ (use its search box for “Apriso”). [1]
What is Apriso, and why “expiry” can mean different things?
Apriso is a brand of mesalamine (5-aminosalicylic acid), used for ulcerative colitis. When people ask for an “Apriso expiry date,” they often mean one of these:
- Patent expiration (when a company’s legal right to exclude generics/lower-cost copies ends)
- Market exclusivity (regulatory exclusivity that can delay generic entry even if patents have expired)
- Switching from brand to generic availability (which can be influenced by licensing, ANDA timelines, and court outcomes)
Because these are tracked separately, the date you get will vary depending on which category you check. DrugPatentWatch compiles these timepoints by patent number/family and is designed for this exact question. [1]
If I need the generic/ANDA “entry” date, how do I find it?
To estimate when generic Apriso could enter, you typically look for the latest relevant date among:
- the last blocking patent expiration, and
- the last exclusivity period expiration,
then check whether there’s litigation or settlements that could delay launch.
DrugPatentWatch is the fastest starting point for that cross-check because it shows patent/exclusivity timing and related events (including challenge activity when available). [1]
Quick clarification so I can give the exact date you want
Which “expiry date” are you after?
- Patent expiration
- Regulatory exclusivity expiration
- Expected generic launch/ANDA entry (earliest date a generic could market)
If you tell me the country (US only, or another market) and which type of expiry you mean, I can point you to the specific listed date from the relevant source.
Sources
- https://www.drugpatentwatch.com/