Who owns the STABLE KEY trademark?

The STABLE KEY trademark is owned by T Stamp Inc..

What class is the STABLE KEY trademark registered in?

The STABLE KEY trademark is registered in Class 042 (Scientific, technology & SaaS services).

What is the serial number for STABLE KEY?

The USPTO serial number for STABLE KEY is 99098939.

What is the registration number for STABLE KEY?

STABLE KEY is registered under USPTO registration number 8446453.

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Updated Oct 6, 2026·8 searches this week

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STA

USPTO Trademark Record

REGISTERED

STABLE KEY

SN 99098939·Reg 8446453·Filed Mar 23, 2025

Owner T Stamp Inc.

Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software.

STABLE KEY (Serial No. 99098939), Registration No. 8446453, is a registered US trademark filed on Mar 23, 2025 by T Stamp Inc.. This trademark covers Class 042 (Scientific, technology & SaaS services).

early section 8: September 22, 2032

Mark Intelligence

STABLE KEY (Reg. #8446453) is a registered US trademark that has been protecting its owner, T Stamp Inc., since 2025. The mark covers Class 042 (Scientific, technology & SaaS services). Goods and services include Scientific and technological services and research and design relating thereto; industrial analysis, industrial research.... The mark faced 1 opposition proceeding during prosecution.

FILED

Mar 23, 2025

SERIAL

99098939

REG#

8446453

REGISTERED

Sep 22, 2026

Filing Information

StatusREGISTERED

Filing DateMar 23, 2025

Serial Number99098939

Registration No.8446453

Registration DateSep 22, 2026

Status DateSep 22, 2026

Published for OppositionAug 04, 2026

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Mar 23, 2025

First use in commerce: Mar 23, 2025

This description is as filed with the USPTO and defines the scope of trademark protection.

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Status History

38 events

REGISTERED-PRINCIPAL REGISTER

Sep 22, 2026

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Sep 22, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

PUBLISHED FOR OPPOSITION

Aug 04, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Aug 04, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jul 29, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Jul 08, 2026

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jun 05, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jun 05, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Jun 05, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Mar 12, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Mar 12, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 12, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Feb 10, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Feb 10, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Feb 10, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Jan 26, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jan 26, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jan 26, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

TEAS PETITION TO REVIVE RECEIVED

Dec 22, 2025

TEAS PETITION TO REVIVE RECEIVED

PETITION TO REVIVE-GRANTED

Dec 22, 2025

PETITION TO REVIVE-GRANTED

NOTICE OF REVIVAL - E-MAILED

Dec 22, 2025

NOTICE OF REVIVAL - E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Dec 22, 2025

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Dec 22, 2025

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Dec 22, 2025

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Dec 17, 2025

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Dec 17, 2025

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Dec 17, 2025

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Dec 17, 2025

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Dec 17, 2025

TEAS CHANGE OF CORRESPONDENCE RECEIVED

ABANDONMENT - FAILURE TO RESPOND OR LATE RESPONSE

Nov 19, 2025

ABANDONMENT - FAILURE TO RESPOND OR LATE RESPONSE

ABANDONMENT NOTICE E-MAILED - FAILURE TO RESPOND

Nov 19, 2025

ABANDONMENT NOTICE E-MAILED - FAILURE TO RESPOND

NON-FINAL ACTION WRITTEN

Aug 05, 2025

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Aug 05, 2025

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Aug 05, 2025

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Jul 29, 2025

ASSIGNED TO EXAMINER

NEW APPLICATION ENTERED

Mar 23, 2025

NEW APPLICATION ENTERED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Mar 23, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

APPLICATION FILING RECEIPT MAILED

Mar 23, 2025

APPLICATION FILING RECEIPT MAILED

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