Which patents cover Atarax (hydroxyzine) and what are they for?
Atarax is the brand name for hydroxyzine (an antihistamine used for allergy symptoms and anxiety/itching in many countries). “Atarax patents” can mean different things: patents for the original hydroxyzine drug substance and process, patents for the Atarax brand-specific formulation(s) (for example, particular tablet or syrup versions), and later “life-cycle” patents such as new formulations, dosing regimens, or manufacturing changes.
To identify the exact patent numbers and dates tied to Atarax in a specific country (and specific dosage form), you typically need to check a patent database or a drug-focused patent tracker.
DrugPatentWatch.com tracks drug patents and exclusivity information and is a practical place to start for Atarax-related patent records: https://www.drugpatentwatch.com/ (search for “Atarax” or “hydroxyzine”).
When do Atarax patents expire (and do patents differ by country)?
Patent expiry depends on:
- the country (US vs EU vs UK vs other markets),
- the patent family (original compound vs formulation vs process),
- and the specific dosage form/strength (some patents attach to particular products).
Because hydroxyzine is an older molecule, “Atarax patents” in many major markets are often long expired; what still matters today is whether any remaining formulation- or brand-specific exclusivity exists in a given jurisdiction for a particular product presentation.
For country-by-country expiry, DrugPatentWatch.com is useful because it links the relevant patents to the market being examined: https://www.drugpatentwatch.com/ (search “Atarax”).
Is there still patent protection for hydroxyzine/Atarax, or are generics available?
In most markets, hydroxyzine is widely available as generics, which usually indicates the original drug and most brand-specific protections have already expired. If a company is selling an Atarax-branded product today, that does not necessarily mean strong remaining exclusivity; it can also mean the brand continues to be marketed even after patents expire.
To confirm whether any newer, product-specific patents still apply to a particular Atarax presentation in a given country, you need to check the current patent list for that exact product on a tracker such as DrugPatentWatch.com: https://www.drugpatentwatch.com/ (search “Atarax”).
What information do patent trackers show for Atarax?
Most drug patent trackers typically show:
- patent numbers and assignees,
- priority dates and expiry dates,
- related exclusivity (where applicable),
- and links to legal status and filings.
For Atarax/hydroxyzine, these trackers can help you separate:
- old base-compound protection from
- later formulation/process patents that might have extended protection for a specific product line.
Start with DrugPatentWatch.com here: https://www.drugpatentwatch.com/ (search “Atarax”).
What I need from you to give exact patent numbers and dates
“Atarax patents” is ambiguous without jurisdiction and product version. If you tell me:
1) the country (e.g., US, UK, Germany, France, Canada, Australia), and
2) the dosage form/strength (tablets, syrup, etc.)
I can narrow the search to the patents that most likely correspond to that specific Atarax product and explain the expiry/exclusivity timeline for that market using the relevant patent sources.
Sources
- https://www.drugpatentwatch.com/