Wednesday, June 10, 2026

Patent intelligence Β· HU

HU P9903958

INSTANT VESICULAR PRODUCT

expired A61K/91272A61K/91277
Status expired
Pipeline programs 1
Years to expiry 0
Applicant portfolio 10
Patent details β€” HU P9903958

Quick answer

HU P9903958 (INSTANT VESICULAR PRODUCT) is held by ASTELLAS PHARMA EUROP B V [NL]. Status: expired. Granted Apr 28, 2000. Expires Apr 23, 2020 (0 years remaining) β€” relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
β€”
CPC classes
A61K/91272, A61K/91277

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Frequently asked questions

What is US patent P9903958?

HU P9903958 (INSTANT VESICULAR PRODUCT) is held by ASTELLAS PHARMA EUROP B V [NL]. Status: expired. Granted Apr 28, 2000. Expires Apr 23, 2020 (0 years remaining) β€” relevant for patent-cliff and LOE planning.

Who owns HU P9903958?

ASTELLAS PHARMA EUROP B V [NL] is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 10 pharmaceutical patents for this assignee.

When does HU P9903958 expire?

Our index shows an expiration date of Apr 23, 2020 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.