Who owns the STACKFLOW trademark?

The STACKFLOW trademark is owned by Narrowstack LLC.

What class is the STACKFLOW trademark registered in?

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

What is the serial number for STACKFLOW?

The USPTO serial number for STACKFLOW is 98250783.

What is the registration number for STACKFLOW?

STACKFLOW is registered under USPTO registration number 7798193.

Sealvo

Home Search: STACKFLOWSTACKFLOW #98250783

Back

Updated Oct 7, 2026·18 searches this week

View on USPTO TSDR Find similar marks

STA

USPTO Trademark Record

REGISTERED

STACKFLOW

SN 98250783·Reg 7798193·Filed Nov 01, 2023

Owner Narrowstack LLC

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.

STACKFLOW (Serial No. 98250783), Registration No. 7798193, is a registered US trademark filed on Nov 01, 2023 by Narrowstack LLC. This trademark covers Class 042 (Scientific, technology & SaaS services).

early section 8: May 20, 2031

Mark Intelligence

STACKFLOW (Reg. #7798193) is a registered US trademark that has been protecting its owner, Narrowstack LLC, since 2023. 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

Nov 01, 2023

SERIAL

98250783

REG#

7798193

REGISTERED

May 20, 2025

Filing Information

StatusREGISTERED

Filing DateNov 01, 2023

Serial Number98250783

Registration No.7798193

Registration DateMay 20, 2025

Status DateMay 20, 2025

Published for OppositionDec 17, 2024

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: Mar 01, 2023

First use in commerce: Mar 01, 2023

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

18 events

REGISTERED-PRINCIPAL REGISTER

May 20, 2025

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

May 20, 2025

NOTICE OF REGISTRATION CONFIRMATION EMAILED

EXTENSION OF TIME TO OPPOSE PROCESS - TERMINATED

Apr 27, 2025

EXTENSION OF TIME TO OPPOSE PROCESS - TERMINATED

EXTENSION OF TIME TO OPPOSE RECEIVED

Jan 13, 2025

EXTENSION OF TIME TO OPPOSE RECEIVED

PUBLISHED FOR OPPOSITION

Dec 17, 2024

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Dec 17, 2024

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Dec 11, 2024

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Nov 21, 2024

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO LIE

Oct 29, 2024

ASSIGNED TO LIE

CORRESPONDENCE RECEIVED IN LAW OFFICE

Oct 29, 2024

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Oct 29, 2024

TEAS/EMAIL CORRESPONDENCE ENTERED

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jul 30, 2024

TEAS RESPONSE TO OFFICE ACTION RECEIVED

NON-FINAL ACTION WRITTEN

Jun 21, 2024

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Jun 21, 2024

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Jun 21, 2024

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Jun 12, 2024

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jan 19, 2024

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Nov 01, 2023

NEW APPLICATION ENTERED

Other Marks by Narrowstack LLC

Additional USPTO filings from the same owner.

STA

STACKMAP

98250766

Narrowstack LLC

REGISTERED

STA

STACKVIEW

98250796

Narrowstack LLC

REGISTERED

NAR

NARROWSTACK.

98251596

Narrowstack LLC

REGISTERED

NAR

NARROWSTACK

98250746

Narrowstack LLC

REGISTERED

Other Marks by Zachary Yates

Additional USPTO filings handled by the same attorney of record.

STA

STACKMAP

98250766

REGISTERED

STA

STACKVIEW

98250796

REGISTERED

NAR

NARROWSTACK.

98251596

REGISTERED

NAR

NARROWSTACK

98250746

REGISTERED

STACKFLOW

Run a conflict check

Other Marks by Narrowstack LLC

Other Marks by Zachary Yates

Get pre-filing clearance

Search 14M+ trademarks

Resources

Company