Who owns the KNF trademark?

The KNF trademark is owned by KNIFE RIVER CORPORATION.

What is the serial number for KNF?

The USPTO serial number for KNF is 97904296.

What is the registration number for KNF?

KNF is registered under USPTO registration number 8423950.

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Updated Oct 6, 2026·20 searches this week

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KNF

USPTO Trademark Record

REGISTERED

KNF

Q: What class is the KNF trademark registered in?

The KNF trademark is registered in Class 042 (Scientific, technology & SaaS services), Class 037 (Construction, installation & repair services).

SN 97904296·Reg 8423950·Filed Apr 24, 2023

Owner KNIFE RIVER CORPORATION

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.; Construction services; installation and repair services; mining extraction, oil and gas drilling.

KNF (Serial No. 97904296), Registration No. 8423950, is a registered US trademark filed on Apr 24, 2023 by KNIFE RIVER CORPORATION. This trademark covers Class 042 (Scientific, technology & SaaS services), Class 037 (Construction, installation & repair services).

early section 8: September 01, 2032

Mark Intelligence

KNF (Reg. #8423950) is a registered US trademark that has been protecting its owner, KNIFE RIVER CORPORATION, since 2023. The mark covers Class 042 (Scientific, technology & SaaS services) and Class 037 (Construction, installation & repair services) respectively. Goods and services include Scientific and technological services and research and design relating thereto; industrial analysis, industrial research.... The mark faced 1 opposition proceeding during prosecution.

FILED

Apr 24, 2023

SERIAL

97904296

REG#

8423950

REGISTERED

Sep 01, 2026

Filing Information

StatusREGISTERED

Filing DateApr 24, 2023

Serial Number97904296

Registration No.8423950

Registration DateSep 01, 2026

Status DateSep 01, 2026

Published for OppositionMay 28, 2024

Filing Basis & Declarations

Standard Characters ClaimedUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Apr 30, 2023

First use in commerce: Apr 30, 2023

Class 037Construction, installation & repair services

US codes: 100, 103, 106

First use anywhere: Apr 30, 2023

First use in commerce: Apr 30, 2023

Construction services; installation and repair services; mining extraction, oil and gas drilling.

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

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Status History

40 events

REGISTERED-PRINCIPAL REGISTER

Sep 01, 2026

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Sep 01, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

ASSIGNED TO LIE

Aug 13, 2026

ASSIGNED TO LIE

CORRESPONDENCE RECEIVED IN LAW OFFICE

Aug 13, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Aug 13, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Aug 13, 2026

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Aug 13, 2026

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Aug 10, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

May 11, 2026

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

May 11, 2026

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

SU - NON-FINAL ACTION - WRITTEN

Feb 10, 2026

SU - NON-FINAL ACTION - WRITTEN

NON-FINAL ACTION E-MAILED

Feb 10, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Feb 10, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Dec 17, 2025

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU EXTENSION 2 GRANTED

Dec 16, 2025

SOU EXTENSION 2 GRANTED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Dec 16, 2025

CASE ASSIGNED TO INTENT TO USE PARALEGAL

STATEMENT OF USE PROCESSING COMPLETE

Dec 16, 2025

STATEMENT OF USE PROCESSING COMPLETE

SOU TEAS EXTENSION RECEIVED

Jul 18, 2025

SOU TEAS EXTENSION RECEIVED

TEAS STATEMENT OF USE RECEIVED

Apr 21, 2025

TEAS STATEMENT OF USE RECEIVED

SOU EXTENSION 2 FILED

Apr 21, 2025

SOU EXTENSION 2 FILED

USE AMENDMENT FILED

Apr 21, 2025

USE AMENDMENT FILED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Mar 04, 2025

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU EXTENSION 1 FILED

Jan 23, 2025

SOU EXTENSION 1 FILED

SOU EXTENSION 1 GRANTED

Jan 23, 2025

SOU EXTENSION 1 GRANTED

SOU TEAS EXTENSION RECEIVED

Jan 22, 2025

SOU TEAS EXTENSION RECEIVED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Jul 23, 2024

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

May 28, 2024

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

May 28, 2024

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

May 08, 2024

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 19, 2024

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Apr 18, 2024

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Apr 18, 2024

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Apr 18, 2024

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Jan 22, 2024

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jan 22, 2024

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jan 22, 2024

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Jan 20, 2024

ASSIGNED TO EXAMINER

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Jun 28, 2023

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

May 22, 2023

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Apr 27, 2023

NEW APPLICATION ENTERED

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