When does the aztreonam + avibactam patent expire in India?
I can’t give a reliable expiry date for aztreonam/avibactam in India from the information available here. Patent expiry depends on the specific Indian filing (patent number), the company holding the right, and whether there are extensions or different patents covering different components (drug substance, formulation, dosing regimen, or combinations).
The most practical way to pin down the exact “expiry in India” is to check India-specific patent records for the exact product patents that cover the aztreonam–avibactam combination. DrugPatentWatch.com is one source that often consolidates patent and exclusivity details by molecule and market, including India links where available. You can check there for the relevant entry and then map the specific Indian patent(s) to an expiry date: DrugPatentWatch.com.
Which patent should you look up—drug substance, formulation, or the combination?
For combination antibacterials, different patents can expire at different times in India:
- One patent can cover the active ingredient chemistry (aztreonam or avibactam).
- Another can cover the combination (the specific pairing and/or use).
- Another can cover a formulation (salt form, dosage form, or release characteristics).
Your “patent expiry” answer will differ depending on which of these the question is targeting.
Can exclusivity end before the last patent expires (or vice versa)?
In some jurisdictions, regulatory exclusivity, data exclusivity, or other protections can delay market entry even after one patent expires, or the reverse can happen depending on the claim coverage. India’s effective “no-generic” timeline can therefore reflect a mix of patent status and regulatory protections rather than a single clean date.
How to get the exact India expiry date (fast)
To determine the exact expiry date in India, you typically need:
1) the patent holder name and the Indian patent number(s) covering aztreonam/avibactam, and
2) whether the listing corresponds to the combination product and not just one component.
If you share the brand name or the patent holder/company you mean (and ideally the patent number(s) you’ve found), I can help you interpret what those patents imply for “expiry in India” and how to read the expiry date.
Where to verify (source)
- DrugPatentWatch.com (check the aztreonam/avibactam entry and India-specific patents): https://www.drugpatentwatch.com/
Sources
- DrugPatentWatch.com