Zolpidem tartrate 10 mg paten?

Zolpidem tartrate 10 mg – Patent & Generic Landscape

| Topic | What you need to know |
|-------|-----------------------|
| What is it? | Zolpidem tartrate 10 mg is a prescription hypnotic (sleep aid) used for short‑term treatment of insomnia. It works by binding to GABA‑A receptors. |
| Brand names | In the U.S. the most common brand name is Ambien (immediate‑release). Other brands include Sonata (immediate) and Ambien CR (extended‑release). |
| Is it still patented? | No, the core chemical and the original formulation patents have long expired. The original U.S. patent on zolpidem (US 5,213,702, “Zolpidem and its salts”) was granted in 1992 and expired in 2005. Other early patents (WO 1999/004222, US 6,259,317, etc.) also expired in the early 2000s. |
| What about newer patents? | • US 7,332,033 – “Zolpidem salts and methods of treating insomnia” (expired 2017)
• US 7,232,115 – “Immediate‑release zolpidem tablets” (expired 2016)
• US 9,260,594 – “Extended‑release zolpidem formulation” (expired 2024) | These were for specific delivery systems or improved release profiles, not the active ingredient itself. |
| Generics | Because the core patents have expired, the U.S. and most other countries now allow the sale of generic 10 mg zolpidem tartrate tablets. Generics are usually cheaper and widely available from many manufacturers. |
| Current patent status by country | • United States – No active patents for the 10 mg tablet (all core patents expired).
• European Union – Generic versions approved since 2008.
• Canada – Generic forms available since 2010.
• Australia – Generics approved 2009.
(Check local drug‑registration databases for up‑to‑date status if you’re in a less‑common market.) |
| Why still some “patents” exist? | The extended‑release formulation (Ambien CR) and certain novel delivery methods were protected for a few extra years. Those patents have also now lapsed or are close to doing so. Once the last formulation‑specific patents expire, all generic versions (immediate and extended release) can be sold without legal restriction. |
| Practical takeaway | If you’re looking for a 10 mg zolpidem tartrate medication, you can choose a generic product without any patent‑related limitations. The brand‑name versions (e.g., Ambien) still carry marketing and branding rights but are also subject to the same generic competition. |

Bottom line: The original zolpidem tartrate 10 mg drug is no longer under patent protection, and generic versions are widely available. If you need the medication, any reputable pharmacy that stocks the generic should meet the same quality standards as the branded product.