Littelfuse, Inc.
71 live US trademarks, filing since 1945. 3 new applications filed this year.
Marks held on the register, by filing date. 2026 is year to date.
A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.
What Littelfuse, Inc. filed most recently.
| Mark | Class | Filed | Basis | Status | Serial |
|---|---|---|---|---|---|
| LFGO | 9 | Oct 21, 2026 | intent to use | pending | 50173290 |
| OCTAMX | 9 | Jun 10, 2026 | intent to use | pending | 99876178 |
| FLATSUPPRESSX | 9 | May 1, 2026 | — | published · closes Nov 12 | 99799375 |
| GUARDIOHM | 9 | Jul 22, 2025 | — | published | 99296138 |
| BRANCH PROTECTOR | 9 | Jul 15, 2025 | — | published | 99284086 |
| LF LOGIK | 9 | Feb 13, 2025 | — | published | 99039790 |
| LF LOGIK | 9 | Feb 13, 2025 | — | published | 99039807 |
| THE BEAST | 9 | Aug 13, 2024 | — | published | 98696093 |
| TTAPE | 9 | Jul 27, 2023 | — | registered Oct 28 | 98104924 |
| MRO PLUS | 35 | Oct 19, 2018 | — | registered Feb 18 | 88162151 |
Anyone who believes they would be harmed by registration can oppose during this window.
Registration starts the maintenance clock: a Section 8 declaration is due between years 5 and 6.
A filing missed by the due date enters a six-month grace period, then the registration cancels.
About Littelfuse, Inc. trademarks.
How many trademarks does Littelfuse, Inc. have?
71 live US trademarks as of October 23, 2026: 63 registered and 8 pending applications. 3 were filed in 2026 so far.
What does Littelfuse, Inc. sell, according to its trademarks?
Mostly electronics & software (Class 9, 65 live marks). Also machinery (Class 7) and science & technology (saas) (Class 42).
Who owns the LF trademark?
LF is owned by Littelfuse, Inc.. It was registered on March 28, 1950 (Reg. No. 0443861) and is live. The same owner holds 70 other live US marks.
When did Littelfuse, Inc. first file a trademark?
Its oldest live US filing dates from 1945: LF, filed October 13, 1945.
Know the morning after Littelfuse, Inc. files.
Watch this company in Thorgate and get an alert for every new application, registration, publication and lapse, with the opposition deadline already worked out. Or monitor your own marks for conflicts with theirs.
Data: USPTO trademark bulk files, processed nightly by Thorgate. Last rebuilt October 23, 2026. Counts cover the US federal register only, not state or foreign marks. Owner names are shown as recorded by the USPTO. This page reports public-record facts and dates and is not legal advice. For the official record of any mark, follow its serial number to USPTO TSDR.