Who owns the 1+1=3 trademark?

The 1+1=3 trademark is owned by COETZEE, CHRISTOPHER.

What class is the 1+1=3 trademark registered in?

The 1+1=3 trademark is registered in Class 041 (Education & entertainment services).

What is the serial number for 1+1=3?

The USPTO serial number for 1+1=3 is 73699605.

What is the registration number for 1+1=3?

1+1=3 is registered under USPTO registration number 1541931.

Sealvo

Home Search: 1+1=31+1=3 #73699605

Back

Updated Sep 17, 2026·30 searches this week

View on USPTO TSDR Find similar marks

113

USPTO Trademark Record

REGISTERED

1+1=3

SN 73699605·Reg 1541931·Filed Dec 07, 1987

Owner COETZEE, CHRISTOPHER

Education; providing of training; entertainment; sporting and cultural activities.

1+1=3 (Serial No. 73699605), Registration No. 1541931, is a registered US trademark filed on Dec 07, 1987 by COETZEE, CHRISTOPHER. This trademark covers Class 041 (Education & entertainment services).

Section 8/9 declaration window: May 30, 2029

Conflict Analysis

Full conflict analysis for 1+1=3 (SN 73699605) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

1+1=3 (Reg. #1541931) is a registered US trademark that has been protecting its owner, COETZEE, CHRISTOPHER, since 1987. The mark covers Class 041 (Education & entertainment services). Goods and services include Education; providing of training; entertainment; sporting and cultural activities.. The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 07, 1987

SERIAL

73699605

REG#

1541931

REGISTERED

May 30, 1989

Filing Information

StatusREGISTERED

Filing DateDec 07, 1987

Serial Number73699605

Registration No.1541931

Registration DateMay 30, 1989

Status DateDec 07, 2019

Published for OppositionMar 07, 1989

Filing Basis & Declarations

Filed as Use ApplicationUse Application CurrentlySection 8 AcceptedSection 15 Acknowledged

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 041Education & entertainment services

US codes: 107

First use anywhere: Dec 31, 1982

First use in commerce: Dec 31, 1982

Education; providing of training; entertainment; sporting and cultural activities.

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

Run a conflict check

Search by serial number, mark name, or logo. See conflicting marks ranked by risk with clear explanations of what contributed.

Run conflict check

Status History

30 events

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

Dec 07, 2019

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

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

Dec 07, 2019

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

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

Dec 07, 2019

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

TEAS RESPONSE TO OFFICE ACTION-POST REG RECEIVED

Dec 05, 2019

TEAS RESPONSE TO OFFICE ACTION-POST REG RECEIVED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Sep 27, 2019

TEAS CHANGE OF CORRESPONDENCE RECEIVED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jul 09, 2019

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

POST REGISTRATION ACTION MAILED - SEC. 8 & 9

Jul 09, 2019

POST REGISTRATION ACTION MAILED - SEC. 8 & 9

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jul 03, 2019

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

May 28, 2019

TEAS SECTION 8 & 9 RECEIVED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

May 28, 2019

TEAS CHANGE OF CORRESPONDENCE RECEIVED

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

May 30, 2018

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

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

Dec 01, 2009

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

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Dec 01, 2009

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

PAPER RECEIVED

Apr 30, 2009

PAPER RECEIVED

RESPONSE RECEIVED TO POST REG. ACTION - SEC. 8 & 9

Apr 30, 2009

RESPONSE RECEIVED TO POST REG. ACTION - SEC. 8 & 9

POST REGISTRATION ACTION MAILED - SEC. 8 & 9

Dec 03, 2008

POST REGISTRATION ACTION MAILED - SEC. 8 & 9

REVIEW OF CORRESPONDENCE COMPLETE

Nov 19, 2008

REVIEW OF CORRESPONDENCE COMPLETE

PAPER RECEIVED

Nov 07, 2008

PAPER RECEIVED

ASSIGNED TO PARALEGAL

Nov 03, 2008

ASSIGNED TO PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Oct 31, 2008

TEAS SECTION 8 & 9 RECEIVED

REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED

Oct 31, 2008

REGISTERED - COMBINED SECTION 8 (10-YR) & SEC. 9 FILED

CASE FILE IN TICRS

Aug 13, 2008

CASE FILE IN TICRS

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

Jan 20, 1996

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

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

May 25, 1995

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

REGISTERED-PRINCIPAL REGISTER

May 30, 1989

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Mar 07, 1989

PUBLISHED FOR OPPOSITION

NOTICE OF PUBLICATION

Feb 04, 1989

NOTICE OF PUBLICATION

APPROVED FOR PUB - PRINCIPAL REGISTER

Oct 26, 1988

APPROVED FOR PUB - PRINCIPAL REGISTER

EXAMINERS AMENDMENT MAILED

Oct 05, 1988

EXAMINERS AMENDMENT MAILED

NON-FINAL ACTION MAILED

Apr 04, 1988

NON-FINAL ACTION MAILED

Other Marks in Class 041 — Education & entertainment services

Recently filed and registered marks in the same international class.

113

1+1=3

87951266

Marcus, Randy

ABANDONED

111

1 1 1 1 1

90978283

David W. Mahon

REGISTERED

111

1+1=1

86042777

Celebrate Forever Foundation

REGISTERED

1/1

86488482

Friends of The Children

REGISTERED

Other Marks by W. PATRICK QUAST

Additional USPTO filings handled by the same attorney of record.

EMB

EMBRACING SPIRITUAL FRONTIERS

86845116

REGISTERED

PUT

PUTTING BEAUTY TO THE TEST

98249755

REGISTERED

TEL

TELEVATOR

75666665

REGISTERED

LAU

LAUNDRY WAREHOUSE

75766217

REGISTERED

1+1=3

Run a conflict check

Other Marks in Class 041 — Education & entertainment services

Other Marks by W. PATRICK QUAST

Get pre-filing clearance

Search 15M+ trademarks

Resources

Company