Who owns the 21ST CENTURY trademark?

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

What is the serial number for 21ST CENTURY?

The USPTO serial number for 21ST CENTURY is 75436943.

What is the registration number for 21ST CENTURY?

21ST CENTURY is registered under USPTO registration number 2300743.

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21S

USPTO Trademark Record

REGISTERED

21ST CENTURY

Q: What class is the 21ST CENTURY trademark registered in?

The 21ST CENTURY trademark is registered in Class 035 (Advertising, business management & retail services), Class 037 (Construction, installation & repair services).

SN 75436943·Reg 2300743·Filed Feb 19, 1998

Owner CENTURY 21 REAL ESTATE LLC

Advertising; business management, organization and administration; office functions.; Construction services; installation and repair services; mining extraction, oil and gas drilling.

21ST CENTURY (Serial No. 75436943), Registration No. 2300743, is a registered US trademark filed on Feb 19, 1998 by CENTURY 21 REAL ESTATE LLC. This trademark covers Class 035 (Advertising, business management & retail services), Class 037 (Construction, installation & repair services).

Section 8/9 declaration window: December 14, 2029

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Full conflict analysis for 21ST CENTURY (SN 75436943) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

21ST CENTURY (Reg. #2300743) is a registered US trademark that has been protecting its owner, CENTURY 21 REAL ESTATE LLC, since 1998. The mark covers Class 035 (Advertising, business management & retail services) and Class 037 (Construction, installation & repair services) respectively. Goods and services include Advertising; business management, organization and administration; office functions.; Construction services; installatio.... The mark faced 1 opposition proceeding during prosecution.

FILED

Feb 19, 1998

SERIAL

75436943

REG#

2300743

REGISTERED

Dec 14, 1999

Filing Information

StatusREGISTERED

Filing DateFeb 19, 1998

Serial Number75436943

Registration No.2300743

Registration DateDec 14, 1999

Status DateJul 25, 2019

Published for OppositionDec 29, 1998

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: Aug 25, 1993

First use in commerce: Aug 25, 1993

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

Class 037Construction, installation & repair services

US codes: 100, 103, 106

First use anywhere: Aug 25, 1993

First use in commerce: Aug 25, 1993

Construction services; installation and repair services; mining extraction, oil and gas drilling.

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

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Status History

71 events

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Apr 02, 2026

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

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 - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Jul 25, 2019

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

Jul 25, 2019

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

Jul 25, 2019

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jul 22, 2019

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Jun 17, 2019

TEAS SECTION 8 & 9 RECEIVED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jun 17, 2019

TEAS CHANGE OF CORRESPONDENCE RECEIVED

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Feb 27, 2019

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED

Dec 14, 2018

COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED

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

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

Apr 21, 2017

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 21, 2017

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

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

Apr 19, 2017

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 19, 2017

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jun 06, 2014

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Jun 06, 2014

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Jun 06, 2014

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Dec 19, 2012

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

NOTICE OF SUIT

Mar 23, 2011

NOTICE OF SUIT

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

May 19, 2010

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Sep 15, 2009

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Sep 15, 2009

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

ASSIGNED TO PARALEGAL

Sep 10, 2009

ASSIGNED TO PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Aug 31, 2009

TEAS SECTION 8 & 9 RECEIVED

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

Mar 17, 2009

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 17, 2009

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Aug 22, 2007

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

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

Dec 27, 2006

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Dec 27, 2006

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

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

Aug 28, 2006

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 28, 2006

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Aug 23, 2006

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Aug 09, 2006

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

CASE FILE IN TICRS

Jun 14, 2006

CASE FILE IN TICRS

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jun 14, 2006

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jun 14, 2006

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Jun 09, 2006

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Jun 09, 2006

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

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

Apr 24, 2006

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

TEAS SECTION 8 & 15 RECEIVED

Jan 05, 2006

TEAS SECTION 8 & 15 RECEIVED

REGISTERED - SEC. 8 (6-YR) & SEC. 15 FILED

Jan 05, 2006

REGISTERED - SEC. 8 (6-YR) & SEC. 15 FILED

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

Oct 13, 2005

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Oct 13, 2005

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

REGISTERED-PRINCIPAL REGISTER

Dec 14, 1999

REGISTERED-PRINCIPAL REGISTER

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Oct 19, 1999

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

ASSIGNED TO EXAMINER

Oct 15, 1999

ASSIGNED TO EXAMINER

SOU EXTENSION 1 GRANTED

Oct 12, 1999

SOU EXTENSION 1 GRANTED

STATEMENT OF USE PROCESSING COMPLETE

Oct 12, 1999

STATEMENT OF USE PROCESSING COMPLETE

SOU EXTENSION 1 FILED

Sep 15, 1999

SOU EXTENSION 1 FILED

USE AMENDMENT FILED

Sep 15, 1999

USE AMENDMENT FILED

NOA MAILED - SOU REQUIRED FROM APPLICANT

Mar 23, 1999

NOA MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

Dec 29, 1998

PUBLISHED FOR OPPOSITION

NOTICE OF PUBLICATION

Nov 27, 1998

NOTICE OF PUBLICATION

APPROVED FOR PUB - PRINCIPAL REGISTER

Oct 26, 1998

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Oct 21, 1998

ASSIGNED TO EXAMINER

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