Wednesday, July 8, 2026

Patent intelligence · US

US 9938516

Non-natural amino acid tRNA synthetases for para-methylazido-L-phenylalanine

granted A61KA61K31/40A61K47/68031A61K47/6855
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 12
Applicant portfolio 34
Patent details — US 9938516
Jurisdiction
US
Status
granted
Grant date
Apr 10, 2018
Expiration
Apr 5, 2038
Claims
22
CPC classes
A61K, A61K31/40, A61K47/68031, A61K47/6855
View on Google Patents ↗

Quick answer

US 9938516 (Non-natural amino acid tRNA synthetases for para-methylazido-L-phenylalanine) is held by Sutro Biopharma, Inc.. Status: granted. Granted Apr 10, 2018. Expires Apr 5, 2038 (12 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
22
CPC classes
A61K, A61K31/40, A61K47/68031, A61K47/6855

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Frequently asked questions

What is US patent 9938516?

US 9938516 (Non-natural amino acid tRNA synthetases for para-methylazido-L-phenylalanine) is held by Sutro Biopharma, Inc.. Status: granted. Granted Apr 10, 2018. Expires Apr 5, 2038 (12 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 9938516?

Sutro Biopharma, Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 34 pharmaceutical patents for this assignee.

When does US 9938516 expire?

Our index shows an expiration date of Apr 5, 2038 (12 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.