Who owns the DUOLEC trademark?

The DUOLEC trademark is owned by LUBRICATION ENGINEERS, INC..

What class is the DUOLEC trademark registered in?

The DUOLEC trademark is registered in Class 004 (Industrial oils, fuels, lubricants & candles).

What is the serial number for DUOLEC?

The USPTO serial number for DUOLEC is 88792509.

What is the registration number for DUOLEC?

DUOLEC is registered under USPTO registration number 6135903.

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Home Search: DUOLECDUOLEC #88792509

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DUO

USPTO Trademark Record

REGISTERED

DUOLEC

SN 88792509·Reg 6135903·Filed Feb 11, 2020

Owner LUBRICATION ENGINEERS, INC.

Industrial oils and greases, wax; lubricants; dust absorbing, wetting and binding compositions; fuels and illuminants; candles and wicks for lighting.

DUOLEC (Serial No. 88792509), Registration No. 6135903, is a registered US trademark filed on Feb 11, 2020 by LUBRICATION ENGINEERS, INC.. This trademark covers Class 004 (Industrial oils, fuels, lubricants & candles).

Section 8/9 declaration window: August 26, 2030

Mark Intelligence

DUOLEC (Reg. #6135903) is a registered US trademark that has been protecting its owner, LUBRICATION ENGINEERS, INC., since 2020. The mark covers Class 004 (Industrial oils, fuels, lubricants & candles). Goods and services include Industrial oils and greases, wax; lubricants; dust absorbing, wetting and binding compositions; fuels and illuminants; c.... The mark faced 1 opposition proceeding during prosecution.

FILED

Feb 11, 2020

SERIAL

88792509

REG#

6135903

REGISTERED

Aug 25, 2020

Filing Information

StatusREGISTERED

Filing DateFeb 11, 2020

Serial Number88792509

Registration No.6135903

Registration DateAug 25, 2020

Status DateOct 28, 2026

Published for OppositionJun 09, 2020

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application CurrentlySection 8 AcceptedSection 15 AcknowledgedTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 004Industrial oils, fuels, lubricants & candles

US codes: 001, 006, 015

First use anywhere: Jul 17, 2007

First use in commerce: Jul 17, 2007

Industrial oils and greases, wax; lubricants; dust absorbing, wetting and binding compositions; fuels and illuminants; candles and wicks for lighting.

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

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Status History

23 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Oct 28, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Oct 28, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

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

Oct 28, 2026

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

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Oct 28, 2026

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

TEAS SECTION 8 & 15 RECEIVED

Aug 22, 2026

TEAS SECTION 8 & 15 RECEIVED

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

Aug 25, 2025

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

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

Jun 23, 2022

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

May 04, 2022

ASSIGNMENT OF OWNERSHIP NOT UPDATED AUTOMATICALLY

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Jan 05, 2022

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Jan 25, 2021

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Jan 25, 2021

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Jan 25, 2021

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jan 25, 2021

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Jan 25, 2021

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Jan 13, 2021

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

REGISTERED-PRINCIPAL REGISTER

Aug 25, 2020

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Jun 09, 2020

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jun 09, 2020

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

May 20, 2020

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 30, 2020

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Apr 29, 2020

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Feb 15, 2020

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Feb 14, 2020

NEW APPLICATION ENTERED

Other Marks by LUBRICATION ENGINEERS, INC.

Additional USPTO filings from the same owner.

XPO

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88790724

LUBRICATION ENGINEERS, INC.

REGISTERED

PYR

PYROSHIELD

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LUBRICATION ENGINEERS, INC.

REGISTERED

END

ENDURE

98759156

LUBRICATION ENGINEERS, INC.

REGISTERED

LUB

LUBRICATION ENGINEERS ASSET RELIABILITY SOLUTIONS

98759149

LUBRICATION ENGINEERS, INC.

REGISTERED

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Other Marks by LUBRICATION ENGINEERS, INC.

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