Who owns the STACKOS trademark?

The STACKOS trademark is owned by FLEXGEN POWER SYSTEMS, LLC.

What class is the STACKOS trademark registered in?

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

What is the serial number for STACKOS?

The USPTO serial number for STACKOS is 99157866.

What is the registration number for STACKOS?

STACKOS is registered under USPTO registration number 0.

STA

USPTO Trademark Record

PENDING

STACKOS

SN 99157866·Reg 0·Filed Apr 27, 2025

Owner FLEXGEN POWER SYSTEMS, LLC

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.

STACKOS (Serial No. 99157866), Registration No. 0, is a pending US trademark filed on Apr 27, 2025 by FLEXGEN POWER SYSTEMS, LLC. This trademark covers Class 009 (Electronics, software & scientific instruments).

Statement of Use due: January 07, 2027110 days remaining

Mark Intelligence

STACKOS (Reg. #0) is a pending US trademark that was filed in 2025 and is currently under USPTO examination. 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 27, 2025

SERIAL

99157866

REG#

REGISTERED

Dec 31, 1969

Owner

Applicant

FLEXGEN POWER SYSTEMS, LLC

Entity

LLC

State

Address

280 S. Mangum Street, Suite 150, Durham, NC, 27701

Country

Attorney

NameAlicia Matusheski Khaled

Law firm

Alicia Matusheski Khaled Perkins Coie LLP

Docket

160445.4008

Address

P.O. Box 2608, Seattle, WA 98111, United States

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Filing Information

StatusPENDING

Filing DateApr 27, 2025

Serial Number99157866

Registration No.0

Registration DateDec 31, 1969

Status DateJul 07, 2026

Published for OppositionMay 12, 2026

Mark TypeStandard characters

Attorney Docket160445.4008

Status DescriptionLive and pending, notice of allowance issued

Filing Signals

FILED

2025

YEARS AGO

CLASSES

MADRID FILINGS

—

Opposed 1× during prosecution

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Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 009Electronics, software & scientific instruments

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

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

Status History

24 events

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Jul 07, 2026

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

May 12, 2026

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

May 12, 2026

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

May 06, 2026

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

ASSIGNED TO EXAMINER

May 05, 2026

ASSIGNED TO EXAMINER

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 13, 2026

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Mar 17, 2026

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Mar 17, 2026

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Mar 17, 2026

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Mar 13, 2026

TEAS CHANGE OF OWNER ADDRESS RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Mar 13, 2026

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

Mar 13, 2026

TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 13, 2026

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 13, 2026

TEAS CHANGE OF CORRESPONDENCE RECEIVED

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

Mar 11, 2026

AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

Dec 22, 2025

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

Dec 22, 2025

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

NON-FINAL ACTION WRITTEN

Sep 23, 2025

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Sep 23, 2025

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Sep 23, 2025

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Sep 17, 2025

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Sep 05, 2025

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Apr 27, 2025

NEW APPLICATION ENTERED

APPLICATION FILING RECEIPT MAILED

Apr 27, 2025

APPLICATION FILING RECEIPT MAILED

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