Who owns the CHEMEX trademark?

The CHEMEX trademark is owned by DONGSUNG CHEMICAL CO., LTD..

What class is the CHEMEX trademark registered in?

The CHEMEX trademark is registered in Class 040 (Treatment & processing of materials).

What is the serial number for CHEMEX?

The USPTO serial number for CHEMEX is 79421269.

What is the registration number for CHEMEX?

CHEMEX is registered under USPTO registration number 8155741.

Sealvo

Home Search: CHEMEXCHEMEX #79421269

Back

Updated Oct 10, 2026·27 searches this week

View on USPTO TSDR Find similar marks

CHE

USPTO Trademark Record

REGISTERED

CHEMEX

SN 79421269·Reg 8155741·Filed Feb 27, 2025

Owner DONGSUNG CHEMICAL CO., LTD.

Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation.

CHEMEX (Serial No. 79421269), Registration No. 8155741, is a registered US trademark filed on Feb 27, 2025 by DONGSUNG CHEMICAL CO., LTD.. This trademark covers Class 040 (Treatment & processing of materials).

early section 8: March 03, 2032

Mark Intelligence

CHEMEX (Reg. #8155741) is a registered US trademark that has been protecting its owner, DONGSUNG CHEMICAL CO., LTD., since 2025. The mark covers Class 040 (Treatment & processing of materials). Goods and services include Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food a.... The mark faced 6 opposition proceedings during prosecution.

FILED

Feb 27, 2025

SERIAL

79421269

REG#

8155741

REGISTERED

Mar 03, 2026

Filing Information

StatusREGISTERED

Filing DateFeb 27, 2025

Serial Number79421269

Registration No.8155741

Registration DateMar 03, 2026

Status DateMar 03, 2026

Published for OppositionJan 13, 2026

Filing Basis & Declarations

Standard Characters Claimed

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 040Treatment & processing of materials

US codes: 100, 103, 106

Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation.

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

28 events

NOTIFICATION OF POSSIBLE OPPOSITION - PROCESSED BY IB

Sep 24, 2026

NOTIFICATION OF POSSIBLE OPPOSITION - PROCESSED BY IB

FINAL DECISION TRANSACTION PROCESSED BY IB

Sep 10, 2026

FINAL DECISION TRANSACTION PROCESSED BY IB

NOTIFICATION OF POSSIBLE OPPOSITION CREATED, TO BE SENT TO IB

Sep 09, 2026

NOTIFICATION OF POSSIBLE OPPOSITION CREATED, TO BE SENT TO IB

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

Sep 09, 2026

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

FINAL DISPOSITION PROCESSED

Aug 24, 2026

FINAL DISPOSITION PROCESSED

FINAL DISPOSITION NOTICE SENT TO IB

Aug 24, 2026

FINAL DISPOSITION NOTICE SENT TO IB

FINAL DISPOSITION NOTICE CREATED, TO BE SENT TO IB

Jun 03, 2026

FINAL DISPOSITION NOTICE CREATED, TO BE SENT TO IB

REGISTERED-PRINCIPAL REGISTER

Mar 03, 2026

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Mar 03, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

PUBLISHED FOR OPPOSITION

Jan 13, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jan 13, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION PROCESSED BY IB

Jan 08, 2026

NOTIFICATION PROCESSED BY IB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jan 07, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

Dec 24, 2025

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

NOTICE OF START OF OPPOSITION PERIOD CREATED, TO BE SENT TO IB

Dec 23, 2025

NOTICE OF START OF OPPOSITION PERIOD CREATED, TO BE SENT TO IB

APPROVED FOR PUB - PRINCIPAL REGISTER

Dec 11, 2025

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Dec 10, 2025

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Dec 10, 2025

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Dec 10, 2025

TEAS/EMAIL CORRESPONDENCE ENTERED

REFUSAL PROCESSED BY IB

Jul 26, 2025

REFUSAL PROCESSED BY IB

REFUSAL PROCESSED BY MPU

Jul 05, 2025

REFUSAL PROCESSED BY MPU

NON-FINAL ACTION MAILED - REFUSAL SENT TO IB

Jul 05, 2025

NON-FINAL ACTION MAILED - REFUSAL SENT TO IB

NON-FINAL ACTION (IB REFUSAL) PREPARED FOR REVIEW

May 07, 2025

NON-FINAL ACTION (IB REFUSAL) PREPARED FOR REVIEW

NON-FINAL ACTION WRITTEN

May 06, 2025

NON-FINAL ACTION WRITTEN

ASSIGNED TO EXAMINER

Apr 18, 2025

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Apr 11, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

APPLICATION FILING RECEIPT MAILED

Apr 11, 2025

APPLICATION FILING RECEIPT MAILED

SN ASSIGNED FOR SECT 66A APPL FROM IB

Apr 10, 2025

SN ASSIGNED FOR SECT 66A APPL FROM IB

Other Marks by DONGSUNG CHEMICAL CO., LTD.

Additional USPTO filings from the same owner.

NEO

NEOSOLE

79419933

DONGSUNG CHEMICAL CO., LTD.

REGISTERED

GEN

GENEWEL

79415715

DONGSUNG CHEMICAL CO., LTD.

REGISTERED

NEO

NEOPAN

79419887

DONGSUNG CHEMICAL Co., Ltd.

REGISTERED

DON

DONGSUNG FINETEC

79418532

DONGSUNG CHEMICAL CO., LTD.

REGISTERED

Other Marks in Class 040 — Treatment & processing of materials

Recently filed and registered marks in the same international class.

CHE

CHEMEX GLOBAL

97856961

CHEMEX GLOBAL, LLC

REGISTERED

CHE

CHEMEX, LLC

86428629

Chemex, LLC

ABANDONED

Other Marks by Hoejae Ryu

Additional USPTO filings handled by the same attorney of record.

FAI

FAIRCELL

79298652

REGISTERED

DOO

DOOSAN

88108581

REGISTERED

99499326

REGISTERED

BAN

BANJANG PARK

79435382

REGISTERED

CHEMEX

Run a conflict check

Other Marks by DONGSUNG CHEMICAL CO., LTD.

Other Marks in Class 040 — Treatment & processing of materials

Other Marks by Hoejae Ryu

Get pre-filing clearance

Search 14M+ trademarks

Resources

Company