Who owns the LF trademark?

The LF trademark is owned by Littelfuse, Inc..

What class is the LF trademark registered in?

The LF trademark is registered in Class 009 (Electronics, software & scientific instruments).

What is the serial number for LF?

The USPTO serial number for LF is 86485569.

What is the registration number for LF?

LF is registered under USPTO registration number 5709934.

USPTO Trademark Record

REGISTERED

LF

SN 86485569·Reg 5709934·Filed Dec 18, 2014

Owner Littelfuse, Inc.

Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable multimedia files, computer software, blank digital or analogue recording and storage media; mechanisms for coin-operated apparatus; cash registers, calculating devices; computers and computer peripheral devices; diving suits, divers' masks, ear plugs for divers, nose clips for divers, gloves for divers, breathing apparatus for underwater swimming; fire-extinguishing apparatus.

LF (Serial No. 86485569), Registration No. 5709934, is a registered US trademark filed on Dec 18, 2014 by Littelfuse, Inc.. This trademark covers Class 009 (Electronics, software & scientific instruments).

Section 8/9 declaration window: March 26, 2029

Mark Intelligence

LF (Reg. #5709934) is a registered US trademark that has been protecting its owner, Littelfuse, Inc., since 2014. The mark covers Class 009 (Electronics, software & scientific instruments). Goods and services include Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, s.... The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 18, 2014

SERIAL

86485569

REG#

5709934

REGISTERED

Mar 26, 2019

Owner

Applicant

Littelfuse, Inc.

Entity

Corporation

State

Address

8755 West Higgins Road, Suite 500, Chicago, IL, 60631

Country

Attorney

NameKaren Feisthamel

Law firm

Karen Feisthamel KDW Firm PLLC

Docket

1511L0855A

Address

2601 Weston Parkway, Suite 103, Cary, NC 27513, United States

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Filing Information

StatusREGISTERED

Filing DateDec 18, 2014

Serial Number86485569

Registration No.5709934

Registration DateMar 26, 2019

Status DateAug 11, 2025

Published for OppositionDec 29, 2015

Next RenewalMarch 26, 2029

Mark TypeStylized characters

Attorney Docket1511L0855A

Status DescriptionLive and registered, Section 8 and 15 accepted

Filing Signals

FILED

2014

YEARS AGO

12y

CLASSES

MADRID FILINGS

Opposed 1× during prosecution

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Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 009Electronics, software & scientific instruments

US codes: 021, 023, 026, 036, 038

First use anywhere: Feb 19, 2019

First use in commerce: Feb 19, 2019

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

Status History

67 events

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

Aug 11, 2025

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

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

Aug 11, 2025

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

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jul 25, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 15 RECEIVED

Mar 25, 2025

TEAS SECTION 8 & 15 RECEIVED

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

Mar 26, 2024

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

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Nov 22, 2021

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Nov 22, 2021

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Nov 22, 2021

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

Nov 22, 2021

TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Nov 22, 2021

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Nov 22, 2021

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Apr 17, 2019

TEAS CHANGE OF CORRESPONDENCE RECEIVED

REGISTERED-PRINCIPAL REGISTER

Mar 26, 2019

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Feb 22, 2019

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

STATEMENT OF USE PROCESSING COMPLETE

Feb 21, 2019

STATEMENT OF USE PROCESSING COMPLETE

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Feb 21, 2019

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

TEAS STATEMENT OF USE RECEIVED

Feb 19, 2019

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

Feb 19, 2019

USE AMENDMENT FILED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Feb 19, 2019

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Aug 07, 2018

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Aug 06, 2018

CASE ASSIGNED TO INTENT TO USE PARALEGAL

SOU EXTENSION 5 GRANTED

Aug 06, 2018

SOU EXTENSION 5 GRANTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Jul 30, 2018

TEAS CHANGE OF CORRESPONDENCE RECEIVED

SOU TEAS EXTENSION RECEIVED

Jul 30, 2018

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 5 FILED

Jul 30, 2018

SOU EXTENSION 5 FILED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Feb 20, 2018

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Feb 17, 2018

TEAS CHANGE OF CORRESPONDENCE RECEIVED

SOU TEAS EXTENSION RECEIVED

Feb 17, 2018

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 4 FILED

Feb 17, 2018

SOU EXTENSION 4 FILED

SOU EXTENSION 4 GRANTED

Feb 17, 2018

SOU EXTENSION 4 GRANTED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Aug 24, 2017

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU TEAS EXTENSION RECEIVED

Aug 22, 2017

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 3 FILED

Aug 22, 2017

SOU EXTENSION 3 FILED

SOU EXTENSION 3 GRANTED

Aug 22, 2017

SOU EXTENSION 3 GRANTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 23, 2017

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Feb 15, 2017

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU TEAS EXTENSION RECEIVED

Feb 13, 2017

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 2 FILED

Feb 13, 2017

SOU EXTENSION 2 FILED

SOU EXTENSION 2 GRANTED

Feb 13, 2017

SOU EXTENSION 2 GRANTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Feb 08, 2017

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Aug 23, 2016

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU TEAS EXTENSION RECEIVED

Aug 19, 2016

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 1 FILED

Aug 19, 2016

SOU EXTENSION 1 FILED

SOU EXTENSION 1 GRANTED

Aug 19, 2016

SOU EXTENSION 1 GRANTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 19, 2016

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Feb 23, 2016

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

Dec 29, 2015

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Dec 29, 2015

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Dec 09, 2015

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Oct 07, 2015

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS/EMAIL CORRESPONDENCE ENTERED

Sep 16, 2015

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS REQUEST FOR RECONSIDERATION RECEIVED

Sep 15, 2015

TEAS REQUEST FOR RECONSIDERATION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Sep 15, 2015

CORRESPONDENCE RECEIVED IN LAW OFFICE

FINAL REFUSAL WRITTEN

Sep 11, 2015

FINAL REFUSAL WRITTEN

FINAL REFUSAL E-MAILED

Sep 11, 2015

FINAL REFUSAL E-MAILED

NOTIFICATION OF FINAL REFUSAL EMAILED

Sep 11, 2015

NOTIFICATION OF FINAL REFUSAL EMAILED

TEAS/EMAIL CORRESPONDENCE ENTERED

Aug 21, 2015

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 20, 2015

TEAS CHANGE OF CORRESPONDENCE RECEIVED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Aug 20, 2015

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Aug 20, 2015

CORRESPONDENCE RECEIVED IN LAW OFFICE

NON-FINAL ACTION WRITTEN

Feb 20, 2015

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Feb 20, 2015

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Feb 20, 2015

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Feb 06, 2015

ASSIGNED TO EXAMINER

NOTICE OF PSEUDO MARK E-MAILED

Dec 24, 2014

NOTICE OF PSEUDO MARK E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Dec 23, 2014

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Dec 22, 2014

NEW APPLICATION ENTERED

LF

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