Wednesday, July 8, 2026

Patent intelligence · US

US 9770519

Protein-polymer-drug conjugates

granted A61KA61K47/58A61K47/59A61K47/60
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 11
Applicant portfolio 136
Patent details — US 9770519
Jurisdiction
US
Status
granted
Grant date
Sep 26, 2017
Expiration
Sep 21, 2037
Claims
21
CPC classes
A61K, A61K47/58, A61K47/59, A61K47/60
View on Google Patents ↗

Quick answer

US 9770519 (Protein-polymer-drug conjugates) is held by Mersana Therapeutics, Inc.. Status: granted. Granted Sep 26, 2017. Expires Sep 21, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
21
CPC classes
A61K, A61K47/58, A61K47/59, A61K47/60, A61K47/64, A61K47/6883

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Frequently asked questions

What is US patent 9770519?

US 9770519 (Protein-polymer-drug conjugates) is held by Mersana Therapeutics, Inc.. Status: granted. Granted Sep 26, 2017. Expires Sep 21, 2037 (11 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9770519?

Mersana Therapeutics, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 136 pharmaceutical patents for this assignee.

When does US 9770519 expire?

Our index shows an expiration date of Sep 21, 2037 (11 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.