Who owns the SUN TZU trademark?

The SUN TZU trademark is owned by Chatbuddy, Inc..

What class is the SUN TZU trademark registered in?

The SUN TZU trademark is registered in Class 042 (Scientific, technology & SaaS services).

What is the serial number for SUN TZU?

The USPTO serial number for SUN TZU is 99541786.

What is the registration number for SUN TZU?

SUN TZU is registered under USPTO registration number 8409361.

Sealvo

Home Search: SUN TZUSUN TZU #99541786

Back

Updated Oct 6, 2026·30 searches this week

View on USPTO TSDR Find similar marks

SUN

USPTO Trademark Record

REGISTERED

SUN TZU

SN 99541786·Reg 8409361·Filed Dec 11, 2025

Owner Chatbuddy, Inc.

Scientific and technological services and research and design relating thereto; industrial analysis, industrial research and industrial design services; quality control and authentication services; design and development of computer hardware and software.

SUN TZU (Serial No. 99541786), Registration No. 8409361, is a registered US trademark filed on Dec 11, 2025 by Chatbuddy, Inc.. This trademark covers Class 042 (Scientific, technology & SaaS services).

early section 8: August 25, 2032

Mark Intelligence

SUN TZU (Reg. #8409361) is a registered US trademark that has been protecting its owner, Chatbuddy, Inc., since 2025. The mark covers Class 042 (Scientific, technology & SaaS services). Goods and services include Scientific and technological services and research and design relating thereto; industrial analysis, industrial research.... The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 11, 2025

SERIAL

99541786

REG#

8409361

REGISTERED

Aug 25, 2026

Filing Information

StatusREGISTERED

Filing DateDec 11, 2025

Serial Number99541786

Registration No.8409361

Registration DateAug 25, 2026

Status DateAug 25, 2026

Published for OppositionJul 07, 2026

Filing Basis & Declarations

Standard Characters ClaimedFiled as Use ApplicationUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Dec 03, 2025

First use in commerce: Dec 03, 2025

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

10 events

REGISTERED-PRINCIPAL REGISTER

Aug 25, 2026

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Aug 25, 2026

NOTICE OF REGISTRATION CONFIRMATION EMAILED

PUBLISHED FOR OPPOSITION

Jul 07, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jul 07, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jul 01, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Jun 09, 2026

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Apr 15, 2026

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Feb 12, 2026

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Dec 11, 2025

NEW APPLICATION ENTERED

APPLICATION FILING RECEIPT MAILED

Dec 11, 2025

APPLICATION FILING RECEIPT MAILED

Other Marks by Chatbuddy, Inc.

Additional USPTO filings from the same owner.

LIT

LITTLE MERMAID

99716842

Chatbuddy, Inc.

REGISTERED

CLE

CLEOPATRA

99539391

Chatbuddy, Inc.

REGISTERED

DAR

D'ARTAGNAN

99579117

Chatbuddy, Inc.

REGISTERED

ELZ

EL ZORRO

98855087

Chatbuddy, Inc.

REGISTERED

Other Marks in Class 042 — Scientific, technology & SaaS services

Recently filed and registered marks in the same international class.

SUN

SUN TZU

75527172

Sun Tzu Security Ltd.

ABANDONED

TZU

TZU CHI

87055271

BUDDHIST TZU CHI CHARITY FOUNDATION

REGISTERED

SUN

88517343

Snap-on Incorporated

REGISTERED

SUN

87650056

SUN HYDRAULICS, LLC

REGISTERED

Other Marks by Bryan Peroff

Additional USPTO filings handled by the same attorney of record.

BIG

BIG PRINCESS

99816872

REGISTERED

LUM

LUMOAEVA

99220050

REGISTERED

BUF

BUFFALO BILL

99536806

REGISTERED

SKI

SKINNYON

99610298

REGISTERED

SUN TZU

Run a conflict check

Other Marks by Chatbuddy, Inc.

Other Marks in Class 042 — Scientific, technology & SaaS services

Other Marks by Bryan Peroff

Get pre-filing clearance

Search 14M+ trademarks

Resources

Company