Littelfuse Inc trademarks

LFUSUnited StatesLEI 549300MY7HLQFYTPCX75

Littelfuse Inc (LFUS) owns 245 unique trademarks in 9 jurisdictions, combined from 15 owner names in the registers. 165 of them are active.

Browse all trademarksGet this data via the API
Unique trademarks265 register records
245
Active67% of unique marks
165
Jurisdictions
9
Owner names grouped
15
Coverage

Where Littelfuse Inc protects its brands

Each mark counts once here: an international registration is grouped with its country designations, not counted once per country. That gives the 245 unique marks above, from 265 register records.

By office

+1 more

By classA mark can cover several classes

+5 more

Activity

Filings per year

New trademarks Littelfuse Inc has filed each year, counting each mark once.

Peak year · 27 filed
2015
2022 to 2026 · filed
24
First filing
1945

Filings by year: 1945: 1, 1956: 1, 1970: 1, 1973: 1, 1974: 3, 1975: 1, 1976: 1, 1979: 2, 1980: 1, 1982: 2, 1983: 1, 1985: 3, 1986: 3, 1987: 2, 1988: 2, 1989: 5, 1990: 7, 1991: 2, 1992: 8, 1993: 21, 1994: 4, 1996: 6, 1997: 3, 1998: 9, 2000: 4, 2001: 3, 2002: 3, 2003: 2, 2005: 4, 2007: 6, 2008: 7, 2009: 7, 2011: 1, 2012: 7, 2013: 3, 2014: 16, 2015: 27, 2016: 7, 2017: 19, 2018: 2, 2019: 5, 2020: 6, 2021: 2, 2023: 4, 2024: 2, 2025: 12, 2026: 6.

Disputes and deals

Oppositions, cancellations and ownership changes

Proceedings Littelfuse Inc has been part of, and the assignments recorded against its marks.

Disputes & oppositions

Proceedings
12
As challenger
0
As defendant100% win rate
12

By proceeding type

  • Opposition9
  • Appeal3

Outcomes

  • Other9
  • Withdrawn2
  • Challenger lost1

Assignments & security interests

Transactions
19
Marks acquired
15
Marks divested
7
Marks with liens
21
Unreleased security interests
2
  • Assignment10
  • Other3
  • Name change2
  • Security interest2
  • License1
  • Correction1

Recorded from 1968-06-03 to 2023-11-08.

Portfolio

Latest filings

The most recent applications across Littelfuse Inc's owner names.

Browse all 265 register records
MarkStatusOfficeClassesFiled
LFGOexaminingUSPTO92026-10-21
FLATSUPPRESSXexaminingEUIPO92026-10-16
OCTAMXpending publicationUSPTO92026-06-10
FLATSUPPRESSXpending oppositionUSPTO92026-05-01
GUARDIOHMregisteredEUIPO92026-01-09
GUARDIOHMregisteredIP Australia92026-01-09
FAQ

About Littelfuse Inc's trademarks

How many trademarks does Littelfuse Inc own?

Littelfuse Inc owns 245 unique trademarks across the registers Signa tracks, filed as 265 register records.

How many of Littelfuse Inc's trademarks are registered?

144 of Littelfuse Inc's unique marks are registered.

Where does Littelfuse Inc file the most trademarks?

Littelfuse Inc holds the most marks at the USPTO, with 140 unique marks.

What is the stock ticker for Littelfuse Inc?

Littelfuse Inc trades under the ticker LFUS.

API

Get this data via the API

Every number on this page comes from the Signa API. Pull Littelfuse Inc's portfolio into your own product with one request.

  • GET/v1/entities/{id}/analytics

    Portfolio, disputes and ownership changes

  • GET/v1/entities/{id}

    Company record, ticker, LEI and owner names

  • GET/v1/entities/{id}/trademarks

    Every trademark in the portfolio

Get API keyView docs
GET /v1/entities/{id}/analytics
ID=ent_019ebba6-a51e-721d-8594-a2c37cebcc98
curl https://api.signa.so/v1/entities/$ID/analytics \
  -H "Authorization: Bearer $SIGNA_API_KEY"
Response
{
  "object": "analytics_report",
  "subject": {
    "id": "ent_019ebba6-a51e-721d-8594-a2c37cebcc98",
    "object": "entity",
    "name": "LITTELFUSE INC"
  },
  "portfolio": {
    "mark_count": 245,
    "active_count": 165,
    "jurisdiction_spread": {
      "US": 140,
      "GB": 42,
      "EU": 32
    }
  }
}