Who owns the LANGCHECK trademark?

The LANGCHECK trademark is owned by Citadel AI Inc..

What is the serial number for LANGCHECK?

The USPTO serial number for LANGCHECK is 99192208.

What is the registration number for LANGCHECK?

LANGCHECK is registered under USPTO registration number 8267230.

LAN

USPTO Trademark Record

REGISTERED

LANGCHECK

Q: What class is the LANGCHECK trademark registered in?

The LANGCHECK trademark is registered in Class 009 (Electronics, software & scientific instruments), Class 042 (Scientific, technology & SaaS services).

SN 99192208·Reg 8267230·Filed May 19, 2025

Owner Citadel AI Inc.

Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable multimedia files, computer software, blank digital or analogue recording and storage media; mechanisms for coin-operated apparatus; cash registers, calculating devices; computers and computer peripheral devices; diving suits, divers' masks, ear plugs for divers, nose clips for divers, gloves for divers, breathing apparatus for underwater swimming; fire-extinguishing apparatus.; 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.

LANGCHECK (Serial No. 99192208), Registration No. 8267230, is a registered US trademark filed on May 19, 2025 by Citadel AI Inc.. This trademark covers Class 009 (Electronics, software & scientific instruments), Class 042 (Scientific, technology & SaaS services).

early section 8: May 19, 2032

Mark Intelligence

LANGCHECK (Reg. #8267230) is a registered US trademark that has been protecting its owner, Citadel AI Inc., since 2025. The mark covers Class 009 (Electronics, software & scientific instruments) and Class 042 (Scientific, technology & SaaS services) respectively. Goods and services include Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, s....

FILED

May 19, 2025

SERIAL

99192208

REG#

8267230

REGISTERED

May 19, 2026

Owner

Applicant

Citadel AI Inc.

Entity

Corporation

Address

Todaimae HiRAKU GATE 301, 2-3-10 Mukougaoka, Bunkyo-ku, Tokyo, 113-0023

Country

Attorney

NameTimothy J. Maier

Law firm

Timothy J. Maier Maier & Maier, PLLC

Docket

02120424TM

Address

345 South Patrick St., Alexandria, VA 22314, United States

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Filing Information

StatusREGISTERED

Filing DateMay 19, 2025

Serial Number99192208

Registration No.8267230

Registration DateMay 19, 2026

Status DateMay 19, 2026

Mark TypeStandard characters

Attorney Docket02120424TM

Status DescriptionLive and registered

Filing Signals

FILED

2025

YEARS AGO

CLASSES

MADRID FILINGS

—

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Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 009Electronics, software & scientific instruments

US codes: 021, 023, 026, 036, 038

Class 042Scientific, technology & SaaS services

US codes: 100, 101

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.

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

Status History

26 events

REGISTERED-SUPPLEMENTAL REGISTER

May 19, 2026

REGISTERED-SUPPLEMENTAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

May 19, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

May 19, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

May 19, 2026

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

May 19, 2026

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

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

May 19, 2026

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

May 19, 2026

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

May 19, 2026

TEAS CHANGE OF CORRESPONDENCE RECEIVED

ON HOLD - ELECTRONIC RECORD REVIEW REQUIRED

Apr 24, 2026

ON HOLD - ELECTRONIC RECORD REVIEW REQUIRED

APPROVED FOR REGISTRATION SUPPLEMENTAL REGISTER

Apr 16, 2026

APPROVED FOR REGISTRATION SUPPLEMENTAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Apr 10, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Apr 10, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Apr 10, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Mar 09, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Mar 09, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 09, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Dec 10, 2025

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Dec 10, 2025

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Dec 10, 2025

TEAS/EMAIL CORRESPONDENCE ENTERED

ASSIGNED TO EXAMINER

Sep 30, 2025

ASSIGNED TO EXAMINER

NON-FINAL ACTION WRITTEN

Sep 30, 2025

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Sep 30, 2025

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Sep 30, 2025

NOTIFICATION OF NON-FINAL ACTION E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Sep 25, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

May 19, 2025

NEW APPLICATION ENTERED

APPLICATION FILING RECEIPT MAILED

May 19, 2025

APPLICATION FILING RECEIPT MAILED

LANGCHECK

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