Who owns the K FIVEFOUR trademark?

The K FIVEFOUR trademark is owned by MILLENNIUM CORPORATION.

What is the serial number for K FIVEFOUR?

The USPTO serial number for K FIVEFOUR is 88455081.

What is the registration number for K FIVEFOUR?

K FIVEFOUR is registered under USPTO registration number 5921007.

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Updated Oct 7, 2026·26 searches this week

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KFI

USPTO Trademark Record

REGISTERED

K FIVEFOUR

Q: What class is the K FIVEFOUR trademark registered in?

The K FIVEFOUR trademark is registered in Class 041 (Education & entertainment services), Class 042 (Scientific, technology & SaaS services).

SN 88455081·Reg 5921007·Filed May 31, 2019

Owner MILLENNIUM CORPORATION

Education; providing of training; entertainment; sporting and cultural activities.; Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software.

K FIVEFOUR (Serial No. 88455081), Registration No. 5921007, is a registered US trademark filed on May 31, 2019 by MILLENNIUM CORPORATION. This trademark covers Class 041 (Education & entertainment services), Class 042 (Scientific, technology & SaaS services).

Section 8/9 declaration window: November 26, 2029

Mark Intelligence

K FIVEFOUR (Reg. #5921007) is a registered US trademark that has been protecting its owner, MILLENNIUM CORPORATION, since 2019. The mark covers Class 041 (Education & entertainment services) and Class 042 (Scientific, technology & SaaS services) respectively. Goods and services include Education; providing of training; entertainment; sporting and cultural activities.; Scientific and technological service.... The mark faced 1 opposition proceeding during prosecution.

FILED

May 31, 2019

SERIAL

88455081

REG#

5921007

REGISTERED

Nov 26, 2019

Filing Information

StatusREGISTERED

Filing DateMay 31, 2019

Serial Number88455081

Registration No.5921007

Registration DateNov 26, 2019

Status DateAug 19, 2026

Published for OppositionSep 10, 2019

Filing Basis & Declarations

Filed as Use ApplicationUse Application CurrentlySection 8 Accepted

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: May 28, 2019

First use in commerce: May 28, 2019

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

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: May 28, 2019

First use in commerce: May 28, 2019

Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software.

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

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Status History

28 events

REGISTERED - SEC. 8 (6-YR) ACCEPTED

Aug 19, 2026

REGISTERED - SEC. 8 (6-YR) ACCEPTED

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

Aug 19, 2026

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

TEAS RESPONSE TO OFFICE ACTION-POST REG RECEIVED

Aug 14, 2026

TEAS RESPONSE TO OFFICE ACTION-POST REG RECEIVED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Apr 15, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

POST REGISTRATION ACTION MAILED - SEC. 8

Apr 15, 2026

POST REGISTRATION ACTION MAILED - SEC. 8

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Dec 24, 2025

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

TEAS SECTION 8 RECEIVED

Nov 25, 2025

TEAS SECTION 8 RECEIVED

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

Nov 26, 2024

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

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

Apr 11, 2022

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 11, 2022

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Apr 11, 2022

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Apr 11, 2022

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Apr 20, 2020

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Apr 20, 2020

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 20, 2020

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Apr 20, 2020

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Apr 20, 2020

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

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

Feb 04, 2020

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Feb 04, 2020

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

REGISTERED-PRINCIPAL REGISTER

Nov 26, 2019

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Sep 10, 2019

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Sep 10, 2019

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Aug 21, 2019

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO EXAMINER

Jul 30, 2019

ASSIGNED TO EXAMINER

APPROVED FOR PUB - PRINCIPAL REGISTER

Jul 30, 2019

APPROVED FOR PUB - PRINCIPAL REGISTER

NOTICE OF DESIGN SEARCH CODE E-MAILED

Jun 18, 2019

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jun 16, 2019

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Jun 04, 2019

NEW APPLICATION ENTERED

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