Who owns the TWWFKK trademark?

The TWWFKK trademark is owned by Liu Yonghai.

What class is the TWWFKK trademark registered in?

The TWWFKK trademark is registered in Class 019 (Non-metallic building materials).

What is the serial number for TWWFKK?

The USPTO serial number for TWWFKK is 90511980.

What is the registration number for TWWFKK?

TWWFKK is registered under USPTO registration number 6590094.

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Updated Sep 23, 2026·31 searches this week

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TWW

USPTO Trademark Record

REGISTERED

TWWFKK

SN 90511980·Reg 6590094·Filed Feb 04, 2021

Owner Liu Yonghai

Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; asphalt, pitch, tar and bitumen; transportable buildings, not of metal; monuments, not of metal.

TWWFKK (Serial No. 90511980), Registration No. 6590094, is a registered US trademark filed on Feb 04, 2021 by Liu Yonghai. This trademark covers Class 019 (Non-metallic building materials).

early section 8: December 14, 2027

Conflict Analysis

Full conflict analysis for TWWFKK (SN 90511980) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

TWWFKK (Reg. #6590094) is a registered US trademark that has been protecting its owner, Liu Yonghai, since 2021. The mark covers Class 019 (Non-metallic building materials). Goods and services include Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; asphalt, pitch, tar and.... The mark faced 1 opposition proceeding during prosecution.

FILED

Feb 04, 2021

SERIAL

90511980

REG#

6590094

REGISTERED

Dec 14, 2021

Filing Information

StatusREGISTERED

Filing DateFeb 04, 2021

Serial Number90511980

Registration No.6590094

Registration DateDec 14, 2021

Status DateDec 14, 2021

Published for OppositionSep 28, 2021

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application CurrentlyTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 019Non-metallic building materials

US codes: 001, 012, 033, 050

First use anywhere: Jan 18, 2021

First use in commerce: Jan 18, 2021

Materials, not of metal, for building and construction; rigid pipes, not of metal, for building; asphalt, pitch, tar and bitumen; transportable buildings, not of metal; monuments, not of metal.

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

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Status History

16 events

AMENDMENT CORRESPONDENCE ENTERED

Jul 02, 2025

AMENDMENT CORRESPONDENCE ENTERED

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

May 18, 2025

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

May 18, 2025

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

May 18, 2025

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

May 18, 2025

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

REGISTERED-PRINCIPAL REGISTER

Dec 14, 2021

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Sep 28, 2021

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Sep 28, 2021

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Sep 08, 2021

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO EXAMINER

Aug 26, 2021

ASSIGNED TO EXAMINER

APPROVED FOR PUB - PRINCIPAL REGISTER

Aug 26, 2021

APPROVED FOR PUB - PRINCIPAL REGISTER

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

Aug 24, 2021

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 24, 2021

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 24, 2021

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

May 10, 2021

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Feb 08, 2021

NEW APPLICATION ENTERED

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