Thursday, July 9, 2026

Patent intelligence · US

US 9855252

Methods of treating keratin hyperproliferation disorders using mTOR inhibitors

granted A61KA61K31/436A61K31/4745A61K9/0014
Status granted
Linked drugs 2
Pipeline programs 6
Years to expiry 11
Applicant portfolio 9
Patent details — US 9855252
Jurisdiction
US
Status
granted
Grant date
Jan 2, 2018
Expiration
Dec 28, 2037
Claims
19
CPC classes
A61K, A61K31/436, A61K31/4745, A61K9/0014
View on Google Patents ↗

Quick answer

US 9855252 (Methods of treating keratin hyperproliferation disorders using mTOR inhibitors) is held by PALVELLA THERAPEUTICS, INC.. Status: granted. Granted Jan 2, 2018. Expires Dec 28, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
19
CPC classes
A61K, A61K31/436, A61K31/4745, A61K9/0014, A61K9/0019, A61K9/0053

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Frequently asked questions

What is US patent 9855252?

US 9855252 (Methods of treating keratin hyperproliferation disorders using mTOR inhibitors) is held by PALVELLA THERAPEUTICS, INC.. Status: granted. Granted Jan 2, 2018. Expires Dec 28, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9855252?

PALVELLA THERAPEUTICS, INC. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 9 pharmaceutical patents for this assignee.

When does US 9855252 expire?

Our index shows an expiration date of Dec 28, 2037 (11 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.