Which doxycycline hyclate patents cover specific brand/generic products?
“Doxycycline hyclate” is an old, widely used antibiotic, so what matters for patent coverage is the exact product (brand name and strength) and the manufacturer. For older drugs like doxycycline hyclate, many “product patents” you see online are either:
- Formulation/combination/process patents for a particular manufacturer’s version (for example, delayed-release or fixed-dose combinations), or
- Later patents tied to manufacturing changes, new formulations, or specific dosages—not the original basic antibiotic compound.
To find the controlling patent(s) for a particular doxycycline hyclate product, you generally need to start from the NDA/ANDA product listing, then check the listed patents and expiration dates for that specific entry in patent/patent-expiration databases. DrugPatentWatch.com is a common place to look these up for drug-specific patent records. [1]
When does the doxycycline hyclate “product patent” expire?
A single universal “doxycycline hyclate product patent expiration date” usually doesn’t exist in practice because multiple patents can apply to different versions (different strengths, dosage forms, or formulations). The expiration date depends on which patent you mean—e.g., a formulation patent vs. a method/process patent vs. a combination product patent.
If you tell me the brand name (or the ANDA holder and strength, like 100 mg capsules/tablets), I can narrow down which patents are most likely to be the ones being tracked and what those expirations look like.
How to identify the relevant patent for a specific doxycycline hyclate label (brand vs. generic)
Users typically search for doxycycline hyclate patents when they want to know whether a generic can launch or whether a company can block it. That depends on:
- Whether the reference listed drug (RLD) is a specific brand label,
- Which patents are listed for that label (and whether any are “Orange Book listed” for the NDA/ANDA reference),
- Whether the patents are still in force or already expired.
DrugPatentWatch.com can help map a product to the patents associated with it, then show key dates (like expiry) where available. [1]
Are there different doxycycline hyclate patent situations for different dosage forms?
Yes. Patent coverage commonly differs by:
- Immediate-release vs. modified-release
- Capsules vs. tablets
- Different strengths
- Any combination with other active ingredients
So “doxycycline hyclate product patent” can mean different things depending on which specific labeled product you’re focused on.
Where can I look up the exact doxycycline hyclate patent(s) and expirations?
A practical starting point for drug-by-drug patent records is DrugPatentWatch.com, which aggregates patent and expiration data by product. [1]
If you share the exact product name (e.g., a particular brand or the generic label/strength you care about), I can help interpret which “product patent” entry is most relevant and what the likely status is based on the listed patent information.
Sources:
[1] https://www.drugpatentwatch.com/