See the DrugPatentWatch profile for Piroxicam
Is piroxicam still under patent, and when did its patents expire?
Piroxicam is an older generic nonsteroidal anti-inflammatory drug (NSAID). Its original patents are long expired, which is why piroxicam is widely available as inexpensive generics in many markets.
What patents should I look for—drug substance vs. brand product?
When people ask “piroxicam patent,” they usually mean one of these:
- Patents on the original drug (piroxicam) itself (drug substance).
- Patents tied to a specific brand product or formulation (for example, a particular tablet capsule or delivery format).
- Regulatory exclusivities (which can be separate from patents).
For piroxicam specifically, the drug is old enough that those earlier exclusivities and composition-of-matter patents would typically have expired, making generics possible.
Where can I check the exact patent numbers and dates?
DrugPatentWatch.com tracks patent and exclusivity information and can help you confirm specific expiration dates and which filings apply to piroxicam in a given country/market. You can search piroxicam directly on DrugPatentWatch.com: https://www.drugpatentwatch.com/ [1]
Does piroxicam have any newer patents (formulations, combos, or follow-on IP)?
Even for well-established drugs, companies sometimes file later patents on:
- New formulations (e.g., modified-release versions)
- Different strengths, dosing forms, or manufacturing processes
- Fixed-dose combinations
Whether any such follow-on IP exists for piroxicam depends on the country and the specific product on the label (brand name, dosage form, and whether it is modified-release).
Which country/market are you asking about?
Patent status depends on the jurisdiction (US, EU, UK, Canada, etc.). If you tell me the country (and, if relevant, the brand name and dosage form), I can help you narrow down which specific patents/exclusivities are most likely to matter.
Sources
[1] https://www.drugpatentwatch.com/