Who owns the MAINSTAY trademark?

The MAINSTAY trademark is owned by Mainstay Labs Inc..

What class is the MAINSTAY trademark registered in?

The MAINSTAY trademark is registered in Class 036 (Insurance, financial & real estate services).

What is the serial number for MAINSTAY?

The USPTO serial number for MAINSTAY is 99413034.

What is the registration number for MAINSTAY?

MAINSTAY is registered under USPTO registration number 8396577.

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Updated Sep 29, 2026·41 searches this week

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MAI

USPTO Trademark Record

REGISTERED

MAINSTAY

SN 99413034·Reg 8396577·Filed Sep 25, 2025

Owner Mainstay Labs Inc.

Financial, monetary and banking services; insurance services; real estate services.

MAINSTAY (Serial No. 99413034), Registration No. 8396577, is a registered US trademark filed on Sep 25, 2025 by Mainstay Labs Inc.. This trademark covers Class 036 (Insurance, financial & real estate services).

early section 8: August 11, 2032

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Mark Intelligence

MAINSTAY (Reg. #8396577) is a registered US trademark that has been protecting its owner, Mainstay Labs Inc., since 2025. The mark covers Class 036 (Insurance, financial & real estate services). Goods and services include Financial, monetary and banking services; insurance services; real estate services.. The mark faced 1 opposition proceeding during prosecution.

FILED

Sep 25, 2025

SERIAL

99413034

REG#

8396577

REGISTERED

Aug 11, 2026

Filing Information

StatusREGISTERED

Filing DateSep 25, 2025

Serial Number99413034

Registration No.8396577

Registration DateAug 11, 2026

Status DateAug 11, 2026

Published for OppositionFeb 24, 2026

Filing Basis & Declarations

Standard Characters ClaimedUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 036Insurance, financial & real estate services

US codes: 100, 101, 102

First use anywhere: Aug 01, 2024

First use in commerce: Aug 01, 2024

Financial, monetary and banking services; insurance services; real estate services.

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

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Status History

19 events

REGISTERED-PRINCIPAL REGISTER

Aug 11, 2026

REGISTERED-PRINCIPAL REGISTER

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Jul 20, 2026

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Jul 20, 2026

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Jul 18, 2026

CASE ASSIGNED TO INTENT TO USE PARALEGAL

STATEMENT OF USE PROCESSING COMPLETE

Jul 18, 2026

STATEMENT OF USE PROCESSING COMPLETE

TEAS STATEMENT OF USE RECEIVED

May 08, 2026

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

May 08, 2026

USE AMENDMENT FILED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Apr 21, 2026

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

Feb 24, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Feb 24, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Feb 18, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO EXAMINER

Feb 02, 2026

ASSIGNED TO EXAMINER

APPROVED FOR PUB - PRINCIPAL REGISTER

Feb 02, 2026

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Dec 23, 2025

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Dec 23, 2025

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Dec 23, 2025

TEAS CHANGE OF CORRESPONDENCE RECEIVED

NEW APPLICATION ENTERED

Sep 25, 2025

NEW APPLICATION ENTERED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Sep 25, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

APPLICATION FILING RECEIPT MAILED

Sep 25, 2025

APPLICATION FILING RECEIPT MAILED

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