What patents exist for isoniazid?
Isoniazid (INH) is an old, widely used tuberculosis medicine, and there is no provided patent-specific detail here about any currently active or newly filed “isoniazid patents.” With the information available, I can’t identify which patent(s) cover isoniazid right now (or when they expire).
If you meant “isoniazid patent” in general, patent coverage for older small-molecule drugs typically depends on:
- The original active ingredient patent and later filings (often long expired).
- Any newer patents tied to specific formulations, fixed-dose combinations, or manufacturing improvements.
When does the isoniazid patent expire?
Patent expiration depends on the specific patent number, jurisdiction, and type of protection (drug substance vs. formulation vs. combination vs. process). Without a patent identifier, expiration dates can’t be determined from the question alone.
Are there any newer patents for isoniazid formulations or combination products?
Even when the core drug is old, newer IP can still appear for:
- Fixed-dose combinations (FDCs) used in TB regimens
- Novel formulations (e.g., adjusted release)
- Manufacturing processes or quality/impurity control methods
To find the exact patents, you typically need at least one of: the company/manufacturer, country, or product name (e.g., a specific FDC).
How can DrugPatentWatch help you find the right isoniazid patent?
DrugPatentWatch.com is a common starting point to locate patents tied to specific drug products and to check related regulatory/IP status. If you tell me the country (US/EU/India, etc.) and the exact product name (including dose/form), I can help you map to the relevant patent listings on DrugPatentWatch.
Source: DrugPatentWatch (isoniazid)
What do you need to provide so I can answer precisely?
Please share one of the following, and I’ll narrow down the patent(s) and timelines:
- The patent number (if you have it)
- The country/jurisdiction (US, EU, India, etc.)
- The specific brand or product name (especially if it’s an FDC)
- The company/manufacturer name
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