Who owns the WORKMASTER trademark?

The WORKMASTER trademark is owned by LIU, YU, MR..

What class is the WORKMASTER trademark registered in?

The WORKMASTER trademark is registered in Class 003 (Non-medicated cosmetics, toiletry preparations & cleaning preparations).

What is the serial number for WORKMASTER?

The USPTO serial number for WORKMASTER is 85739495.

What is the registration number for WORKMASTER?

WORKMASTER is registered under USPTO registration number 4401639.

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Updated Sep 26, 2026·14 searches this week

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USPTO Trademark Record

REGISTERED

WORKMASTER

SN 85739495·Reg 4401639·Filed Sep 26, 2012

Owner LIU, YU, MR.

Non-medicated cosmetics and toiletry preparations; non-medicated dentifrices; perfumes; bleaching preparations and other substances for laundry use; cleaning, polishing and abrasive preparations.

WORKMASTER (Serial No. 85739495), Registration No. 4401639, is a registered US trademark filed on Sep 26, 2012 by LIU, YU, MR.. This trademark covers Class 003 (Non-medicated cosmetics, toiletry preparations & cleaning preparations).

Section 8/9 declaration window: September 12, 2033

Conflict Analysis

Full conflict analysis for WORKMASTER (SN 85739495) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

WORKMASTER (Reg. #4401639) is a registered US trademark that has been protecting its owner, LIU, YU, MR., since 2012. The mark covers Class 003 (Non-medicated cosmetics, toiletry preparations & cleaning preparations). Goods and services include Non-medicated cosmetics and toiletry preparations; non-medicated dentifrices; perfumes; bleaching preparations and other.... The mark faced 1 opposition proceeding during prosecution.

FILED

Sep 26, 2012

SERIAL

85739495

REG#

4401639

REGISTERED

Sep 10, 2013

Filing Information

StatusREGISTERED

Filing DateSep 26, 2012

Serial Number85739495

Registration No.4401639

Registration DateSep 10, 2013

Status DateMar 25, 2023

Published for OppositionMar 05, 2013

Filing Basis & Declarations

Standard Characters ClaimedUse Application CurrentlySection 8 AcceptedTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 003Non-medicated cosmetics, toiletry preparations & cleaning preparations

US codes: 001, 004, 006, 050, 051, 052

First use anywhere: Oct 01, 2008

First use in commerce: Oct 01, 2008

Non-medicated cosmetics and toiletry preparations; non-medicated dentifrices; perfumes; bleaching preparations and other substances for laundry use; cleaning, polishing and abrasive preparations.

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

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Status History

34 events

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Mar 19, 2025

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

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

Mar 25, 2023

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

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Mar 25, 2023

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

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

Mar 25, 2023

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Mar 24, 2023

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Sep 12, 2022

TEAS SECTION 8 & 9 RECEIVED

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

Sep 10, 2022

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

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Sep 28, 2021

TEAS CHANGE OF OWNER ADDRESS RECEIVED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Sep 28, 2021

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Sep 28, 2021

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Sep 28, 2018

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (6-YR) ACCEPTED

Sep 28, 2018

REGISTERED - SEC. 8 (6-YR) ACCEPTED

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

Sep 28, 2018

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Sep 25, 2018

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS SECTION 8 RECEIVED

Sep 25, 2018

TEAS SECTION 8 RECEIVED

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

Sep 10, 2018

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

REGISTERED-PRINCIPAL REGISTER

Sep 10, 2013

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Aug 09, 2013

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

ASSIGNED TO LIE

Aug 08, 2013

ASSIGNED TO LIE

LAW OFFICE REGISTRATION REVIEW COMPLETED

Aug 08, 2013

LAW OFFICE REGISTRATION REVIEW COMPLETED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Jul 26, 2013

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

STATEMENT OF USE PROCESSING COMPLETE

Jul 06, 2013

STATEMENT OF USE PROCESSING COMPLETE

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Jun 28, 2013

CASE ASSIGNED TO INTENT TO USE PARALEGAL

TEAS STATEMENT OF USE RECEIVED

Jun 05, 2013

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

Jun 05, 2013

USE AMENDMENT FILED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Apr 30, 2013

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

Mar 05, 2013

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Mar 05, 2013

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Feb 13, 2013

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO EXAMINER

Jan 24, 2013

ASSIGNED TO EXAMINER

APPROVED FOR PUB - PRINCIPAL REGISTER

Jan 24, 2013

APPROVED FOR PUB - PRINCIPAL REGISTER

NOTICE OF PSEUDO MARK MAILED

Oct 03, 2012

NOTICE OF PSEUDO MARK MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Oct 02, 2012

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Sep 29, 2012

NEW APPLICATION ENTERED

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