Who owns the C21 trademark?

The C21 trademark is owned by CENTURY 21 REAL ESTATE LLC.

What class is the C21 trademark registered in?

The C21 trademark is registered in Class 035 (Advertising, business management & retail services).

What is the serial number for C21?

The USPTO serial number for C21 is 87748422.

What is the registration number for C21?

C21 is registered under USPTO registration number 5770668.

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C21

USPTO Trademark Record

REGISTERED

C21

SN 87748422·Reg 5770668·Filed Jan 09, 2018

Owner CENTURY 21 REAL ESTATE LLC

Advertising; business management, organization and administration; office functions.

C21 (Serial No. 87748422), Registration No. 5770668, is a registered US trademark filed on Jan 09, 2018 by CENTURY 21 REAL ESTATE LLC. This trademark covers Class 035 (Advertising, business management & retail services).

Section 8/9 declaration window: June 04, 2029

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Full conflict analysis for C21 (SN 87748422) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

C21 (Reg. #5770668) is a registered US trademark that has been protecting its owner, CENTURY 21 REAL ESTATE LLC, since 2018. The mark covers Class 035 (Advertising, business management & retail services). Goods and services include Advertising; business management, organization and administration; office functions.. The mark faced 1 opposition proceeding during prosecution.

FILED

Jan 09, 2018

SERIAL

87748422

REG#

5770668

REGISTERED

Jun 04, 2019

Filing Information

StatusREGISTERED

Filing DateJan 09, 2018

Serial Number87748422

Registration No.5770668

Registration DateJun 04, 2019

Status DateAug 08, 2025

Published for OppositionJan 08, 2019

Filing Basis & Declarations

Standard Characters ClaimedUse Application CurrentlySection 8 AcceptedSection 15 Acknowledged

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 035Advertising, business management & retail services

US codes: 100, 101, 102

First use anywhere: Jan 15, 2018

First use in commerce: May 23, 2018

Advertising; business management, organization and administration; office functions.

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

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Status History

53 events

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Apr 02, 2026

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Aug 08, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

Aug 08, 2025

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Aug 08, 2025

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

TEAS SECTION 8 & 15 RECEIVED

Apr 07, 2025

TEAS SECTION 8 & 15 RECEIVED

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Oct 23, 2024

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

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

Aug 23, 2024

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 23, 2024

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 23, 2024

TEAS CHANGE OF CORRESPONDENCE RECEIVED

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

Jun 04, 2024

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Jan 12, 2023

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Jan 12, 2023

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Jan 12, 2023

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jan 12, 2023

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Jan 12, 2023

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Feb 23, 2022

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Feb 23, 2022

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Feb 23, 2022

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Feb 23, 2022

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Feb 23, 2022

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Aug 05, 2020

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

REGISTERED-PRINCIPAL REGISTER

Jun 04, 2019

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

May 01, 2019

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Apr 30, 2019

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Apr 25, 2019

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU EXTENSION 1 GRANTED

Apr 24, 2019

SOU EXTENSION 1 GRANTED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Apr 24, 2019

CASE ASSIGNED TO INTENT TO USE PARALEGAL

STATEMENT OF USE PROCESSING COMPLETE

Apr 24, 2019

STATEMENT OF USE PROCESSING COMPLETE

TEAS STATEMENT OF USE RECEIVED

Apr 18, 2019

TEAS STATEMENT OF USE RECEIVED

SOU TEAS EXTENSION RECEIVED

Apr 18, 2019

SOU TEAS EXTENSION RECEIVED

USE AMENDMENT FILED

Apr 18, 2019

USE AMENDMENT FILED

SOU EXTENSION 1 FILED

Apr 18, 2019

SOU EXTENSION 1 FILED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Mar 05, 2019

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Feb 27, 2019

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

PUBLISHED FOR OPPOSITION

Jan 08, 2019

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jan 08, 2019

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Dec 19, 2018

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

EXAMINERS AMENDMENT -WRITTEN

Nov 16, 2018

EXAMINERS AMENDMENT -WRITTEN

EXAMINERS AMENDMENT E-MAILED

Nov 16, 2018

EXAMINERS AMENDMENT E-MAILED

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Nov 16, 2018

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

EXAMINER'S AMENDMENT ENTERED

Nov 16, 2018

EXAMINER'S AMENDMENT ENTERED

APPROVED FOR PUB - PRINCIPAL REGISTER

Nov 16, 2018

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS/EMAIL CORRESPONDENCE ENTERED

Oct 25, 2018

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Oct 24, 2018

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Oct 24, 2018

CORRESPONDENCE RECEIVED IN LAW OFFICE

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

Jun 06, 2018

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Jun 06, 2018

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

NON-FINAL ACTION WRITTEN

Apr 25, 2018

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Apr 25, 2018

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Apr 25, 2018

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Apr 18, 2018

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jan 23, 2018

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Jan 12, 2018

NEW APPLICATION ENTERED

Other Marks by CENTURY 21 REAL ESTATE LLC

Additional USPTO filings from the same owner.

21S

21ST CENTURY INSURANCE

78565505

CENTURY 21 REAL ESTATE LLC

REGISTERED

21S

21ST CENTURY

78565509

CENTURY 21 REAL ESTATE LLC

REGISTERED

C21

C21 COMMERCIAL

87034627

Century 21 Real Estate LLC

REGISTERED

21S

21ST CENTURY CASUALTY

78565519

CENTURY 21 REAL ESTATE LLC

REGISTERED

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