What patents cover the Diovan (valsartan) formulations?
Diovan is the brand name for valsartan, and its “formulation patents” typically fall into patents that protect specific drug-product or manufacturing details, such as tablet or film-coating compositions, solid-dose characteristics, or controlled processes used to make a particular version of the product.
To identify the exact Diovan formulation patents (and their application numbers, assignees, and expiration windows), the most direct approach is to use a patent-tracking database that links branded drugs to relevant Orange Book listings and associated patent families. DrugPatentWatch.com is one such resource for branded prescription products, including valsartan/Diovan. [1]
When do Diovan formulation patents expire?
Formulation patent expiration depends on which patent family and which listed formulation is at issue (for example, a specific tablet strength, dosage form, or later-manufacturing change). Patent terms can also reflect filing dates, possible adjustments, and exclusivity periods attached to the underlying marketing authorization.
DrugPatentWatch.com can help you map from “Diovan formulation” to specific listed patents and their projected expiry dates. [1]
Are there different Diovan “formulation” patents for different strengths or dosing forms?
Yes. It’s common for branded products like Diovan to have multiple patent listings tied to:
- specific dosage strengths of tablets,
- particular dosage forms (for example, coated versus non-coated product),
- and/or changes in manufacturing or formulation that required new patent filings.
Those differences are exactly why users searching “Diovan formulation patents” usually need a database lookup that lists patents per product code/strength.
How does a formulation patent affect generics of valsartan?
Even if a generic manufacturer can show bioequivalence for the active ingredient (valsartan), a listed formulation patent can still block generic entry until it expires or is cleared via patent litigation/settlement or other regulatory pathways.
If you want the practical impact for generics timing, you typically need to match the formulation patent(s) listed for Diovan to the relevant generic challenge(s). DrugPatentWatch.com is useful here because it ties branded listings to patent identifiers that are commonly referenced in challenges. [1]
What to search for if you’re tracking Diovan formulation patent numbers yourself
When you search patent databases for Diovan formulation, you’ll usually get the most relevant hits by searching within:
- assignee/company names connected to Diovan (e.g., Novartis legacy ownership is common in older entries, depending on the specific filing),
- valsartan + “tablet” or “film coating,”
- and patent family members that mention “pharmaceutical composition,” “solid oral dosage form,” or manufacturing/processing language.
For a quicker path to the specific patents tied to the marketed Diovan product, start with DrugPatentWatch.com’s brand-to-patent mapping. [1]
Source to pull the exact Diovan formulation patent list
Use DrugPatentWatch.com to view the Diovan brand patent listings (including formulation-related patents) and their status/expiry estimates: [1]
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Sources
[1] https://www.drugpatentwatch.com/