Who owns the STRONGHOLD ENGINEERING INC. SINCE '91 trademark?

The STRONGHOLD ENGINEERING INC. SINCE '91 trademark is owned by Stronghold Engineering, Inc..

What class is the STRONGHOLD ENGINEERING INC. SINCE '91 trademark registered in?

The STRONGHOLD ENGINEERING INC. SINCE '91 trademark is registered in Class 037 (Construction, installation & repair services).

What is the serial number for STRONGHOLD ENGINEERING INC. SINCE '91?

The USPTO serial number for STRONGHOLD ENGINEERING INC. SINCE '91 is 98887168.

What is the registration number for STRONGHOLD ENGINEERING INC. SINCE '91?

STRONGHOLD ENGINEERING INC. SINCE '91 is registered under USPTO registration number 7903923.

STR

USPTO Trademark Record

REGISTERED

STRONGHOLD ENGINEERING INC. SINCE '91

SN 98887168·Reg 7903923·Filed Dec 05, 2024

Owner Stronghold Engineering, Inc.

Construction services; installation and repair services; mining extraction, oil and gas drilling.

STRONGHOLD ENGINEERING INC. SINCE '91 (Serial No. 98887168), Registration No. 7903923, is a registered US trademark filed on Dec 05, 2024 by Stronghold Engineering, Inc.. This trademark covers Class 037 (Construction, installation & repair services).

early section 8: August 19, 2031

Mark Intelligence

STRONGHOLD ENGINEERING INC. SINCE '91 (Reg. #7903923) is a registered US trademark that has been protecting its owner, Stronghold Engineering, Inc., since 2024. The mark covers Class 037 (Construction, installation & repair services). Goods and services include Construction services; installation and repair services; mining extraction, oil and gas drilling.. The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 05, 2024

SERIAL

98887168

REG#

7903923

REGISTERED

Aug 19, 2025

Owner

Applicant

Stronghold Engineering, Inc.

Entity

Corporation

State

Address

150 West Walnut Avenue, Perris, CA, 92571

Country

Attorney

NameBenjamin Diederich

Law firm

Benjamin Diederich Law Office of Benjamin Diederich

Docket

SHENG-002T

Address

29826 Haun Road, Suite 311, Menifee, CA 92586, 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 DateDec 05, 2024

Serial Number98887168

Registration No.7903923

Registration DateAug 19, 2025

Status DateAug 19, 2025

Published for OppositionJul 01, 2025

Mark TypeDesign with words

Attorney DocketSHENG-002T

Status DescriptionLive and registered

Filing Signals

FILED

2024

YEARS AGO

CLASSES

MADRID FILINGS

—

Opposed 1× during prosecution

Search 14M+ trademarks

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

Search now

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 037Construction, installation & repair services

US codes: 100, 103, 106

First use anywhere: Jan 01, 2000

First use in commerce: Jan 01, 2000

Construction services; installation and repair services; mining extraction, oil and gas drilling.

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

Status History

15 events

REGISTERED-PRINCIPAL REGISTER

Aug 19, 2025

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Aug 19, 2025

NOTICE OF REGISTRATION CONFIRMATION EMAILED

PUBLISHED FOR OPPOSITION

Jul 01, 2025

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jul 01, 2025

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jun 25, 2025

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

EXAMINERS AMENDMENT -WRITTEN

May 28, 2025

EXAMINERS AMENDMENT -WRITTEN

EXAMINERS AMENDMENT E-MAILED

May 28, 2025

EXAMINERS AMENDMENT E-MAILED

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

May 28, 2025

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

EXAMINER'S AMENDMENT ENTERED

May 28, 2025

EXAMINER'S AMENDMENT ENTERED

APPROVED FOR PUB - PRINCIPAL REGISTER

May 28, 2025

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

May 26, 2025

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

May 20, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NOTICE OF DESIGN SEARCH CODE E-MAILED

May 20, 2025

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION ENTERED

Dec 05, 2024

NEW APPLICATION ENTERED

APPLICATION FILING RECEIPT MAILED

Dec 05, 2024

APPLICATION FILING RECEIPT MAILED

STRONGHOLD ENGINEERING INC. SINCE '91

Get pre-filing clearance

Search 14M+ trademarks

Run a conflict check

Other Marks by Stronghold Engineering, Inc.

Other Marks in Class 037 — Construction, installation & repair services

Other Marks by Benjamin Diederich

Resources

Company