Saturday, July 11, 2026

Patent intelligence · US

US 6197307

Method for producing high activity extracts from harpagophytum procumbens

expired A61KA61K36/185
Status expired
Linked drugs 3
Pipeline programs 3
Years to expiry 0
Applicant portfolio 95
Patent details — US 6197307

Quick answer

US 6197307 (Method for producing high activity extracts from harpagophytum procumbens) is held by Essential Nutrition, Ltd.. Status: expired. Granted Mar 6, 2001. Expires Mar 1, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
11
CPC classes
A61K, A61K36/185

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Frequently asked questions

What is US patent 6197307?

US 6197307 (Method for producing high activity extracts from harpagophytum procumbens) is held by Essential Nutrition, Ltd.. Status: expired. Granted Mar 6, 2001. Expires Mar 1, 2021 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 6197307?

Essential Nutrition, Ltd. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 95 pharmaceutical patents for this assignee.

When does US 6197307 expire?

Our index shows an expiration date of Mar 1, 2021 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.