Wednesday, July 8, 2026

Patent intelligence · US

US 7348429

Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide(zaleplon) and crystalline forms of zaleplon access…

granted A61PA61P25/20
Status granted
Linked drugs 2
Pipeline programs 6
Years to expiry 2
Applicant portfolio 454
Patent details — US 7348429

Quick answer

US 7348429 (Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide(zaleplon) and crystalline forms of zaleplon accessible with the process) is held by TEVA Gyógyszergyár Zártkörüen Müködö Részvénytárasaság. Status: granted. Granted Mar 25, 2008. Expires Mar 20, 2028 (2 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
2
CPC classes
A61P, A61P25/20

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Frequently asked questions

What is US patent 7348429?

US 7348429 (Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide(zaleplon) and crystalline forms of zaleplon accessible with the process) is held by TEVA Gyógyszergyár Zártkörüen Müködö Részvénytárasaság. Status: granted. Granted Mar 25, 2008. Expires Mar 20, 2028 (2 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 7348429?

TEVA Gyógyszergyár Zártkörüen Müködö Részvénytárasaság is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 454 pharmaceutical patents for this assignee.

When does US 7348429 expire?

Our index shows an expiration date of Mar 20, 2028 (2 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.