Who owns the LEFYN trademark?

The LEFYN trademark is owned by KONG, QIANG.

What class is the LEFYN trademark registered in?

The LEFYN trademark is registered in Class 011 (Lighting, heating, cooling & sanitary apparatus).

What is the serial number for LEFYN?

The USPTO serial number for LEFYN is 90407704.

What is the registration number for LEFYN?

LEFYN is registered under USPTO registration number 6580263.

Sealvo

Home Search: LEFYNLEFYN #90407704

Back

Updated Oct 3, 2026·35 searches this week

View on USPTO TSDR Find similar marks

LEF

USPTO Trademark Record

REGISTERED

LEFYN

SN 90407704·Reg 6580263·Filed Dec 23, 2020

Owner KONG, QIANG

Apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes.

LEFYN (Serial No. 90407704), Registration No. 6580263, is a registered US trademark filed on Dec 23, 2020 by KONG, QIANG. This trademark covers Class 011 (Lighting, heating, cooling & sanitary apparatus).

early section 8: December 07, 2027

Conflict Analysis

Full conflict analysis for LEFYN (SN 90407704) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

LEFYN (Reg. #6580263) is a registered US trademark that has been protecting its owner, KONG, QIANG, since 2020. The mark covers Class 011 (Lighting, heating, cooling & sanitary apparatus). Goods and services include Apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply.... The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 23, 2020

SERIAL

90407704

REG#

6580263

REGISTERED

Dec 07, 2021

Filing Information

StatusREGISTERED

Filing DateDec 23, 2020

Serial Number90407704

Registration No.6580263

Registration DateDec 07, 2021

Status DateDec 07, 2021

Published for OppositionSep 21, 2021

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application CurrentlyTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 011Lighting, heating, cooling & sanitary apparatus

US codes: 013, 021, 023, 024, 031, 034

First use anywhere: Jul 20, 2020

First use in commerce: Jul 20, 2020

Apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes.

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

Run a conflict check

Search by serial number, mark name, or logo. See conflicting marks ranked by risk with clear explanations of what contributed.

Run conflict check

Status History

15 events

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Jun 01, 2022

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

REGISTERED-PRINCIPAL REGISTER

Dec 07, 2021

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Sep 21, 2021

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Sep 21, 2021

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Sep 01, 2021

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Aug 19, 2021

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Aug 18, 2021

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Aug 18, 2021

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Aug 18, 2021

TEAS/EMAIL CORRESPONDENCE ENTERED

ASSIGNED TO EXAMINER

Jun 21, 2021

ASSIGNED TO EXAMINER

NON-FINAL ACTION WRITTEN

Jun 21, 2021

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jun 21, 2021

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jun 21, 2021

NOTIFICATION OF NON-FINAL ACTION E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Mar 10, 2021

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Dec 26, 2020

NEW APPLICATION ENTERED

Other Marks by KONG, QIANG

Additional USPTO filings from the same owner.

LEF

LEFYN

98181334

KONG, QIANG

REGISTERED

LEF

LEFYN

98181342

KONG, QIANG

REGISTERED

LEF

LEFYN

98181331

KONG, QIANG

REGISTERED

LEF

LEFYN

98181337

KONG, QIANG

REGISTERED

Other Marks in Class 011 — Lighting, heating, cooling & sanitary apparatus

Recently filed and registered marks in the same international class.

LEF

LEFYN

98181334

KONG, QIANG

REGISTERED

Other Marks by Yan Gao

Additional USPTO filings handled by the same attorney of record.

SHO

SHOKALE

90465474

REGISTERED

A+

99512462

REGISTERED

WEL

WELZEK

99415652

REGISTERED

WEL

WELZEK

99415662

REGISTERED

LEFYN

Run a conflict check

Other Marks by KONG, QIANG

Other Marks in Class 011 — Lighting, heating, cooling & sanitary apparatus

Other Marks by Yan Gao

Get pre-filing clearance

Search 15M+ trademarks

Resources

Company