LF Trademark

Trademark Overview

On Thursday, December 18, 2014, a trademark application was filed for LF with the United States Patent and Trademark Office. The USPTO has given the LF trademark a serial number of 86485569. The federal status of this trademark filing is SECTION 8 & 15 - ACCEPTED AND ACKNOWLEDGED as of Monday, August 11, 2025. This trademark is owned by Littelfuse, Inc.. The LF trademark is filed in the Computer & Software Products & Electrical & Scientific Products category with the following description:

Fuses; electrical fuses; fuses for automobiles; fuse clips; mounting devices for fuses; semiconductors; rectifiers; circuit overload protector devices; automotive fuses; fuse blocks; fuse holders; surge protectors; diodes; diode arrays; LED circuit protection devices; varistors; polymer resettable fuses; polymer positive temperature coefficient devices, namely, fuses; gas discharge tubes; metal oxide varistors; multi-layer varistors; polymeric electrostatic discharge (ESD) suppressors; surge protection modules
lf

General Information

Serial Number86485569
Word MarkLF
Filing DateThursday, December 18, 2014
Status702 - SECTION 8 & 15 - ACCEPTED AND ACKNOWLEDGED
Status DateMonday, August 11, 2025
Registration Number5709934
Registration DateTuesday, March 26, 2019
Mark Drawing5 - Drawing with word(s) / letter(s) / number(s) in Stylized form
Published for Opposition DateTuesday, December 29, 2015

Trademark Statements

Description of MarkThe mark consists of the letters "LF" in stylized format.
Goods and ServicesFuses; electrical fuses; fuses for automobiles; fuse clips; mounting devices for fuses; semiconductors; rectifiers; circuit overload protector devices; automotive fuses; fuse blocks; fuse holders; surge protectors; diodes; diode arrays; LED circuit protection devices; varistors; polymer resettable fuses; polymer positive temperature coefficient devices, namely, fuses; gas discharge tubes; metal oxide varistors; multi-layer varistors; polymeric electrostatic discharge (ESD) suppressors; surge protection modules
Indication of Colors claimedColor is not claimed as a feature of the mark.

Classification Information

International Class009 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire extinguishing apparatus.
US Class Codes021, 023, 026, 036, 038
Class Status Code6 - Active
Class Status DateTuesday, December 23, 2014
Primary Code009
First Use Anywhere DateTuesday, February 19, 2019
First Use In Commerce DateTuesday, February 19, 2019

Trademark Owner History

Party NameLittelfuse, Inc.
Party Type30 - Original Registrant
Legal Entity Type03 - Corporation
AddressChicago, IL 60631
Party NameLittelfuse, Inc.
Party Type20 - Owner at Publication
Legal Entity Type03 - Corporation
AddressChicago, IL 60631
Party NameLittelfuse, Inc.
Party Type10 - Original Applicant
Legal Entity Type03 - Corporation
AddressChicago, IL 60631

Trademark Events

Event DateEvent Description
Friday, February 6, 2015ASSIGNED TO EXAMINER
Monday, December 22, 2014NEW APPLICATION ENTERED
Tuesday, December 23, 2014NEW APPLICATION OFFICE SUPPLIED DATA ENTERED
Wednesday, December 24, 2014NOTICE OF PSEUDO MARK E-MAILED
Friday, February 20, 2015NON-FINAL ACTION WRITTEN
Thursday, August 20, 2015TEAS CHANGE OF CORRESPONDENCE RECEIVED
Friday, February 20, 2015NON-FINAL ACTION E-MAILED
Friday, February 20, 2015NOTIFICATION OF NON-FINAL ACTION E-MAILED
Thursday, August 20, 2015TEAS RESPONSE TO OFFICE ACTION RECEIVED
Thursday, August 20, 2015CORRESPONDENCE RECEIVED IN LAW OFFICE
Friday, August 21, 2015TEAS/EMAIL CORRESPONDENCE ENTERED
Friday, September 11, 2015FINAL REFUSAL WRITTEN
Friday, September 11, 2015FINAL REFUSAL E-MAILED
Friday, September 11, 2015NOTIFICATION OF FINAL REFUSAL EMAILED
Tuesday, September 15, 2015TEAS REQUEST FOR RECONSIDERATION RECEIVED
Tuesday, September 15, 2015CORRESPONDENCE RECEIVED IN LAW OFFICE
Wednesday, September 16, 2015TEAS/EMAIL CORRESPONDENCE ENTERED
Wednesday, October 7, 2015APPROVED FOR PUB - PRINCIPAL REGISTER
Wednesday, December 9, 2015NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED
Tuesday, December 29, 2015PUBLISHED FOR OPPOSITION
Tuesday, December 29, 2015OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED
Friday, August 19, 2016SOU EXTENSION 1 GRANTED
Tuesday, February 23, 2016NOA E-MAILED - SOU REQUIRED FROM APPLICANT
Friday, August 19, 2016SOU TEAS EXTENSION RECEIVED
Friday, August 19, 2016SOU EXTENSION 1 FILED
Friday, August 19, 2016TEAS CHANGE OF CORRESPONDENCE RECEIVED
Tuesday, August 23, 2016NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED
Wednesday, February 8, 2017TEAS CHANGE OF CORRESPONDENCE RECEIVED
Monday, February 13, 2017SOU TEAS EXTENSION RECEIVED
Monday, February 13, 2017SOU EXTENSION 2 FILED
Monday, February 13, 2017SOU EXTENSION 2 GRANTED
Wednesday, February 15, 2017NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED
Thursday, March 23, 2017TEAS CHANGE OF CORRESPONDENCE RECEIVED
Tuesday, August 22, 2017SOU TEAS EXTENSION RECEIVED
Tuesday, August 22, 2017SOU EXTENSION 3 FILED
Tuesday, August 22, 2017SOU EXTENSION 3 GRANTED
Thursday, August 24, 2017NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED
Saturday, February 17, 2018TEAS CHANGE OF CORRESPONDENCE RECEIVED
Saturday, February 17, 2018SOU TEAS EXTENSION RECEIVED
Saturday, February 17, 2018SOU EXTENSION 4 FILED
Saturday, February 17, 2018SOU EXTENSION 4 GRANTED
Tuesday, February 20, 2018NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED
Monday, July 30, 2018TEAS CHANGE OF CORRESPONDENCE RECEIVED
Monday, July 30, 2018SOU TEAS EXTENSION RECEIVED
Monday, July 30, 2018SOU EXTENSION 5 FILED
Monday, August 6, 2018CASE ASSIGNED TO INTENT TO USE PARALEGAL
Monday, August 6, 2018SOU EXTENSION 5 GRANTED
Tuesday, August 7, 2018NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED
Tuesday, February 19, 2019TEAS STATEMENT OF USE RECEIVED
Tuesday, February 19, 2019USE AMENDMENT FILED
Tuesday, February 19, 2019TEAS CHANGE OF CORRESPONDENCE RECEIVED
Thursday, February 21, 2019STATEMENT OF USE PROCESSING COMPLETE
Thursday, February 21, 2019ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED
Friday, February 22, 2019NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED
Tuesday, March 26, 2019REGISTERED-PRINCIPAL REGISTER
Wednesday, April 17, 2019TEAS CHANGE OF CORRESPONDENCE RECEIVED
Monday, November 22, 2021TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
Monday, November 22, 2021ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
Monday, November 22, 2021TEAS CHANGE OF OWNER ADDRESS RECEIVED
Monday, November 22, 2021TEAS CHANGE OF CORRESPONDENCE RECEIVED
Monday, November 22, 2021APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
Tuesday, March 25, 2025TEAS SECTION 8 & 15 RECEIVED
Monday, August 11, 2025REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.
Monday, August 11, 2025NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED
Friday, July 25, 2025CASE ASSIGNED TO POST REGISTRATION PARALEGAL
Monday, November 22, 2021TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
Tuesday, March 26, 2024COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

Related Keywords

fuses devices varistors fuse circuit surge polymer protection discharge namely