Who owns the C4 trademark?

The C4 trademark is owned by Charles Humphrey Keating IV Foundation.

What is the serial number for C4?

The USPTO serial number for C4 is 90243214.

What is the registration number for C4?

C4 is registered under USPTO registration number 6402380.

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Updated Sep 17, 2026·29 searches this week

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USPTO Trademark Record

REGISTERED

C4

Q: What class is the C4 trademark registered in?

The C4 trademark is registered in Class 036 (Insurance, financial & real estate services), Class 041 (Education & entertainment services).

SN 90243214·Reg 6402380·Filed Oct 08, 2020

Owner Charles Humphrey Keating IV Foundation

Financial, monetary and banking services; insurance services; real estate services.; Education; providing of training; entertainment; sporting and cultural activities.

C4 (Serial No. 90243214), Registration No. 6402380, is a registered US trademark filed on Oct 08, 2020 by Charles Humphrey Keating IV Foundation. This trademark covers Class 036 (Insurance, financial & real estate services), Class 041 (Education & entertainment services).

Renewal window: June 29, 2027285 days remaining

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Mark Intelligence

C4 (Reg. #6402380) is a registered US trademark that has been protecting its owner, Charles Humphrey Keating IV Foundation, since 2020. The mark covers Class 036 (Insurance, financial & real estate services) and Class 041 (Education & entertainment services) respectively. Goods and services include Financial, monetary and banking services; insurance services; real estate services.; Education; providing of training; e.... The mark faced 1 opposition proceeding during prosecution.

FILED

Oct 08, 2020

SERIAL

90243214

REG#

6402380

REGISTERED

Jun 29, 2021

Filing Information

StatusREGISTERED

Filing DateOct 08, 2020

Serial Number90243214

Registration No.6402380

Registration DateJun 29, 2021

Status DateJun 29, 2021

Published for OppositionApr 13, 2021

Filing Basis & Declarations

Filed as Use ApplicationUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 036Insurance, financial & real estate services

US codes: 100, 101, 102

First use anywhere: Sep 21, 2017

First use in commerce: Sep 21, 2017

Financial, monetary and banking services; insurance services; real estate services.

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: Jul 02, 2017

First use in commerce: Jul 02, 2017

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

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

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Status History

17 events

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

Jun 29, 2026

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

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Mar 05, 2024

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Mar 05, 2024

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

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

Mar 05, 2024

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 05, 2024

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 05, 2024

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Mar 05, 2024

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

REGISTERED-PRINCIPAL REGISTER

Jun 29, 2021

REGISTERED-PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Jun 02, 2021

ASSIGNED TO EXAMINER

PUBLISHED FOR OPPOSITION

Apr 13, 2021

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Apr 13, 2021

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Mar 24, 2021

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO EXAMINER

Mar 05, 2021

ASSIGNED TO EXAMINER

APPROVED FOR PUB - PRINCIPAL REGISTER

Mar 05, 2021

APPROVED FOR PUB - PRINCIPAL REGISTER

NOTICE OF DESIGN SEARCH CODE E-MAILED

Nov 24, 2020

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Nov 23, 2020

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Oct 12, 2020

NEW APPLICATION ENTERED

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