Who owns the S SIFANG AUDIO trademark?

The S SIFANG AUDIO trademark is owned by Sifang Liu.

What class is the S SIFANG AUDIO trademark registered in?

The S SIFANG AUDIO trademark is registered in Class 009 (Electronics, software & scientific instruments).

What is the serial number for S SIFANG AUDIO?

The USPTO serial number for S SIFANG AUDIO is 99121114.

What is the registration number for S SIFANG AUDIO?

S SIFANG AUDIO is registered under USPTO registration number 8039621.

SSI

USPTO Trademark Record

REGISTERED

S SIFANG AUDIO

SN 99121114·Reg 8039621·Filed Apr 04, 2025

Owner Sifang Liu

Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable multimedia files, computer software, blank digital or analogue recording and storage media; mechanisms for coin-operated apparatus; cash registers, calculating devices; computers and computer peripheral devices; diving suits, divers' masks, ear plugs for divers, nose clips for divers, gloves for divers, breathing apparatus for underwater swimming; fire-extinguishing apparatus.

S SIFANG AUDIO (Serial No. 99121114), Registration No. 8039621, is a registered US trademark filed on Apr 04, 2025 by Sifang Liu. This trademark covers Class 009 (Electronics, software & scientific instruments).

early section 8: November 25, 2031

Mark Intelligence

S SIFANG AUDIO (Reg. #8039621) is a registered US trademark that has been protecting its owner, Sifang Liu, since 2025. The mark covers Class 009 (Electronics, software & scientific instruments). Goods and services include Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, s.... The mark faced 1 opposition proceeding during prosecution.

FILED

Apr 04, 2025

SERIAL

99121114

REG#

8039621

REGISTERED

Nov 25, 2025

Owner

Applicant

Sifang Liu

Entity

Individual

Address

20360 Elkwood Rd, Walnut, CA, 91789

Country

Attorney

NameMengmei Xu

Law firm

Mengmei Xu Landing Business Law Group P.C.

Address

20955 Pathfinder Rd, Suite 388, Diamond Bar, CA 91765, United States

Get pre-filing clearance

AI attorney analyzes your proposed mark against USPTO — Go/No-Go verdict, class-by-class risks, and strategy recommendations.

Run clearance

Filing Information

StatusREGISTERED

Filing DateApr 04, 2025

Serial Number99121114

Registration No.8039621

Registration DateNov 25, 2025

Status DateNov 25, 2025

Published for OppositionOct 07, 2025

Mark TypeDesign with words

Status DescriptionLive and registered

Filing Signals

FILED

2025

YEARS AGO

CLASSES

MADRID FILINGS

—

Opposed 1× during prosecution

Search 15M+ trademarks

Free USPTO lookups by name, owner, or serial number. No account needed.

Search now

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 009Electronics, software & scientific instruments

US codes: 021, 023, 026, 036, 038

First use anywhere: Feb 01, 2025

First use in commerce: Feb 01, 2025

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

Status History

17 events

REGISTERED-PRINCIPAL REGISTER

Nov 25, 2025

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Nov 25, 2025

NOTICE OF REGISTRATION CONFIRMATION EMAILED

PUBLISHED FOR OPPOSITION

Oct 07, 2025

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Oct 07, 2025

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Oct 01, 2025

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Sep 09, 2025

APPROVED FOR PUB - PRINCIPAL REGISTER

NON-FINAL ACTION WRITTEN

Sep 08, 2025

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Sep 08, 2025

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Sep 08, 2025

NOTIFICATION OF NON-FINAL ACTION E-MAILED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Sep 08, 2025

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Sep 08, 2025

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Sep 08, 2025

TEAS/EMAIL CORRESPONDENCE ENTERED

ASSIGNED TO EXAMINER

Sep 02, 2025

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Aug 16, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NOTICE OF DESIGN SEARCH CODE E-MAILED

Aug 16, 2025

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION ENTERED

Apr 04, 2025

NEW APPLICATION ENTERED

APPLICATION FILING RECEIPT MAILED

Apr 04, 2025

APPLICATION FILING RECEIPT MAILED

S SIFANG AUDIO

Get pre-filing clearance

Search 15M+ trademarks

Run a conflict check

Other Marks by Sifang Liu

Other Marks in Class 009 — Electronics, software & scientific instruments

Other Marks by Mengmei Xu

Resources

Company