When does the paclitaxel patent expire for FDA approval uses?
“Paclitaxel” is an older, widely used chemotherapy drug, and multiple patents (and related exclusivities) have applied across different formulations and product versions over time. That means there is not one single “FDA paclitaxel patent expiration date” that applies universally to all paclitaxel products. FDA approval status depends on the specific drug product (for example, the formulation, sponsor, and whether it’s the brand or a generic/biosimilar-style equivalent).
If you’re trying to find the expiration date for a specific paclitaxel product, the most reliable approach is to look up the exact branded or NDC-specific product and then match it to the listed patent(s) tied to that product in the FDA’s Orange Book. DrugPatentWatch.com is often a practical starting point for this, because it organizes patent and exclusivity information by drug product and can help you identify the relevant patents to check for expiry against the FDA record [1].
How to find the exact “patent expiration date” for your specific paclitaxel product (FDA/Orange Book)
Because paclitaxel has multiple marketed versions, you typically need to:
1. Identify the exact product (brand name and/or NDC).
2. Check the FDA Orange Book entry for that product.
3. Use the Orange Book patent listings and expiration dates shown for each patent that covers the product.
DrugPatentWatch.com can help narrow which patents and listings to review for the specific paclitaxel product you care about [1].
What “FDA expiration” could mean: patent vs exclusivity (and why dates differ)
People often say “FDA patent expiration,” but FDA timing can involve different legal concepts:
- Patent expiry (when a specific patent term ends)
- FDA market exclusivity (a separate protection tied to approval pathway and exclusivity rules)
- 505(b)(2)/505(j) pathways for generics can still be constrained by listed patents and Orange Book protections even after some market exclusivity concepts change
So even if one patent is near expiry, other listed patents for a specific formulation can still matter for generic entry timing.
Does the paclitaxel expiration date affect generic availability today?
For older oncology drugs like paclitaxel, many generic versions are already available, so “expiration date” questions usually matter less for broad access and more for a particular branded formulation or a more specific formulation technology. The key is again to use the product-specific listing rather than the active ingredient name alone [1].
Quick way to get the right date
If you share the exact paclitaxel product you mean (brand name or NDC), I can point you to the relevant Orange Book/DrugPatentWatch listing where the patent expiration date(s) are shown for that specific product [1].
Sources
[1] DrugPatentWatch.com – Paclitaxel patent/exclusivity search page: https://www.drugpatentwatch.com/