Who owns the CITADEL trademark?

The CITADEL trademark is owned by HUMANSYSTEMS INCORPORATED.

What class is the CITADEL trademark registered in?

The CITADEL trademark is registered in Class 009 (Electronics, software & scientific instruments).

What is the serial number for CITADEL?

The USPTO serial number for CITADEL is 97520511.

What is the registration number for CITADEL?

CITADEL is registered under USPTO registration number 8113148.

CITADEL - Owned by HUMANSYSTEMS INCORPORATED - (Class 009)

What to file next

Section 8 declaration of continued use

When: Due between the fifth and sixth anniversary of registration.
Extensions and grace: A six-month grace period follows, with an added per-class fee.
If it is missed: A missed Section 8 cancels the registration, and there is no revival route for it.

How the Section 8 deadline works

General information about USPTO practice, not legal advice. The register is the authority, and a filing that has not yet posted can change what is owed.

Full Goods & Services

Class 009Electronics, software & scientific instruments

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

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.

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

Filing Basis & Declarations

Standard Characters ClaimedTrademark

Status History

36 events

REGISTERED-PRINCIPAL REGISTER

Jan 27, 2026

Code R.PR

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Jan 27, 2026

Code NRCC

PUBLISHED FOR OPPOSITION

Dec 09, 2025

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Dec 09, 2025

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Dec 03, 2025

Code NONP

EXAMINERS AMENDMENT -WRITTEN

Nov 06, 2025

Code CNEA

EXAMINERS AMENDMENT E-MAILED

Nov 06, 2025

Code GNEA

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Nov 06, 2025

Code GNEN

EXAMINER'S AMENDMENT ENTERED

Nov 06, 2025

Code XAEC

APPROVED FOR PUB - PRINCIPAL REGISTER

Nov 06, 2025

Code CNSA

CORRESPONDENCE RECEIVED IN LAW OFFICE

Oct 06, 2025

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Oct 06, 2025

Code TEME

TEAS RESPONSE TO SUSPENSION INQUIRY RECEIVED

Oct 02, 2025

Code ERSI

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jun 12, 2025

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Jun 12, 2025

Code TEME

SUSPENSION LETTER WRITTEN

Jun 12, 2025

Code CNSL

LETTER OF SUSPENSION E-MAILED

Jun 12, 2025

Code GNSL

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

Jun 12, 2025

Code GNS3

TEAS RESPONSE TO SUSPENSION INQUIRY RECEIVED

May 29, 2025

Code ERSI

SUSPENSION INQUIRY WRITTEN

Mar 10, 2025

Code CNSI

INQUIRY TO SUSPENSION E-MAILED

Mar 10, 2025

Code GNSI

NOTIFICATION OF INQUIRY AS TO SUSPENSION E-MAILED

Mar 10, 2025

Code GNS2

SUSPENSION CHECKED - TO ATTORNEY FOR ACTION

Jan 06, 2025

Code RCCK

SUSPENSION LETTER WRITTEN

Dec 04, 2023

Code CNSL

LETTER OF SUSPENSION E-MAILED

Dec 04, 2023

Code GNSL

NOTIFICATION OF LETTER OF SUSPENSION E-MAILED

Dec 04, 2023

Code GNS3

CORRESPONDENCE RECEIVED IN LAW OFFICE

Nov 28, 2023

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Nov 28, 2023

Code TEME

ASSIGNED TO LIE

Nov 27, 2023

Code ALIE

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jun 21, 2023

Code TROA

NON-FINAL ACTION WRITTEN

May 23, 2023

Code CNRT

NON-FINAL ACTION E-MAILED

May 23, 2023

Code GNRT

NOTIFICATION OF NON-FINAL ACTION E-MAILED

May 23, 2023

Code GNRN

ASSIGNED TO EXAMINER

May 11, 2023

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Aug 01, 2022

Code NWOS

NEW APPLICATION ENTERED

Jul 29, 2022

Code NWAP

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Other Marks by Patrick J. Jennings

Additional USPTO filings handled by the same attorney of record.

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CITADEL

What to file next

Full Goods & Services

Filing Basis & Declarations

Other Marks in Class 009 — Electronics, software & scientific instruments

Other Marks by Patrick J. Jennings

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