Who owns the RK trademark?

The RK trademark is owned by WU, ZAI.

What class is the RK trademark registered in?

The RK trademark is registered in Class 008 (Hand tools, cutlery & side arms).

What is the serial number for RK?

The USPTO serial number for RK is 90038329.

What is the registration number for RK?

RK is registered under USPTO registration number 6261670.

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Home Search: RKRK #90038329

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Updated Sep 18, 2026·10 searches this week

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USPTO Trademark Record

REGISTERED

RK

SN 90038329·Reg 6261670·Filed Jul 06, 2020

Owner WU, ZAI

Hand-operated hand tools and implements; cutlery; side arms, except firearms; razors.

RK (Serial No. 90038329), Registration No. 6261670, is a registered US trademark filed on Jul 06, 2020 by WU, ZAI. This trademark covers Class 008 (Hand tools, cutlery & side arms).

Section 8/9 declaration window: February 03, 2031

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Full conflict analysis for RK (SN 90038329) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

RK (Reg. #6261670) is a registered US trademark that has been protecting its owner, WU, ZAI, since 2020. The mark covers Class 008 (Hand tools, cutlery & side arms). Goods and services include Hand-operated hand tools and implements; cutlery; side arms, except firearms; razors.. The mark faced 1 opposition proceeding during prosecution.

FILED

Jul 06, 2020

SERIAL

90038329

REG#

6261670

REGISTERED

Feb 02, 2021

Filing Information

StatusREGISTERED

Filing DateJul 06, 2020

Serial Number90038329

Registration No.6261670

Registration DateFeb 02, 2021

Status DateJun 04, 2026

Published for OppositionNov 17, 2020

Filing Basis & Declarations

Filed as Use ApplicationUse Application CurrentlySection 8 AcceptedTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 008Hand tools, cutlery & side arms

US codes: 023, 028, 044

First use anywhere: May 22, 2019

First use in commerce: May 22, 2019

Hand-operated hand tools and implements; cutlery; side arms, except firearms; razors.

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

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Status History

18 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jun 04, 2026

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (6-YR) ACCEPTED

Jun 04, 2026

REGISTERED - SEC. 8 (6-YR) ACCEPTED

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

Jun 04, 2026

NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED

TEAS SECTION 8 RECEIVED

Feb 03, 2026

TEAS SECTION 8 RECEIVED

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

Feb 02, 2026

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

REGISTERED-PRINCIPAL REGISTER

Feb 02, 2021

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Nov 17, 2020

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Nov 17, 2020

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Oct 28, 2020

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

EXAMINERS AMENDMENT -WRITTEN

Oct 14, 2020

EXAMINERS AMENDMENT -WRITTEN

EXAMINERS AMENDMENT E-MAILED

Oct 14, 2020

EXAMINERS AMENDMENT E-MAILED

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Oct 14, 2020

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

EXAMINER'S AMENDMENT ENTERED

Oct 14, 2020

EXAMINER'S AMENDMENT ENTERED

APPROVED FOR PUB - PRINCIPAL REGISTER

Oct 14, 2020

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Oct 13, 2020

ASSIGNED TO EXAMINER

NOTICE OF DESIGN SEARCH CODE E-MAILED

Aug 04, 2020

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Aug 03, 2020

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Jul 09, 2020

NEW APPLICATION ENTERED

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