Who owns the DEFUNX trademark?

The DEFUNX trademark is owned by Chunrun Xia.

What class is the DEFUNX trademark registered in?

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

What is the serial number for DEFUNX?

The USPTO serial number for DEFUNX is 99079800.

What is the registration number for DEFUNX?

DEFUNX is registered under USPTO registration number 0.

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Home Search: DEFUNXDEFUNX #99079800

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Updated Oct 10, 2026·38 searches this week

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DEF

USPTO Trademark Record

ABANDONED

DEFUNX

SN 99079800·Reg 0·Filed Mar 12, 2025

Owner Chunrun Xia

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

DEFUNX (Serial No. 99079800), Registration No. 0, is a abandoned US trademark filed on Mar 12, 2025 by Chunrun Xia. This trademark covers Class 011 (Lighting, heating, cooling & sanitary apparatus).

Mark Intelligence

DEFUNX (Reg. #0) is an abandoned US trademark that was filed in 2025 but has since been abandoned. 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....

FILED

Mar 12, 2025

SERIAL

99079800

REG#

Filing Information

StatusABANDONED

Filing DateMar 12, 2025

Serial Number99079800

Registration No.0

Status DateMay 11, 2026

Mark TypeStandard characters

Attorney Docket7000.0750

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: Jan 10, 2025

First use in commerce: Jan 10, 2025

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.

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Status History

21 events

ABANDONMENT - FAILURE TO RESPOND OR LATE RESPONSE

May 11, 2026

ABANDONMENT - FAILURE TO RESPOND OR LATE RESPONSE

ABANDONMENT NOTICE E-MAILED - FAILURE TO RESPOND

May 11, 2026

ABANDONMENT NOTICE E-MAILED - FAILURE TO RESPOND

EXAMINERS AMENDMENT -WRITTEN

Jan 22, 2026

EXAMINERS AMENDMENT -WRITTEN

EXAMINERS AMENDMENT E-MAILED

Jan 22, 2026

EXAMINERS AMENDMENT E-MAILED

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Jan 22, 2026

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

EXAMINER'S AMENDMENT ENTERED

Jan 22, 2026

EXAMINER'S AMENDMENT ENTERED

NON-FINAL ACTION WRITTEN

Jan 22, 2026

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jan 22, 2026

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jan 22, 2026

NOTIFICATION OF NON-FINAL ACTION E-MAILED

LETTER OF PROTEST EVIDENCE REVIEWED - ACTION TAKEN

Oct 08, 2025

LETTER OF PROTEST EVIDENCE REVIEWED - ACTION TAKEN

NON-FINAL ACTION WRITTEN

Oct 08, 2025

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Oct 08, 2025

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Oct 08, 2025

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Oct 07, 2025

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Oct 06, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

LETTER OF PROTEST EVIDENCE FORWARDED

Sep 14, 2025

LETTER OF PROTEST EVIDENCE FORWARDED

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

Mar 31, 2025

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 31, 2025

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 31, 2025

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NEW APPLICATION ENTERED

Mar 12, 2025

NEW APPLICATION ENTERED

APPLICATION FILING RECEIPT MAILED

Mar 12, 2025

APPLICATION FILING RECEIPT MAILED

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