Who owns the CT-FLOW trademark?

The CT-FLOW trademark is owned by Heartflow, Inc..

What class is the CT-FLOW trademark registered in?

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

What is the serial number for CT-FLOW?

The USPTO serial number for CT-FLOW is 88481275.

What is the registration number for CT-FLOW?

CT-FLOW is registered under USPTO registration number 6316344.

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Updated Sep 18, 2026·41 searches this week

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CTF

USPTO Trademark Record

REGISTERED

CT-FLOW

SN 88481275·Reg 6316344·Filed Jun 20, 2019

Owner Heartflow, 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.

CT-FLOW (Serial No. 88481275), Registration No. 6316344, is a registered US trademark filed on Jun 20, 2019 by Heartflow, Inc.. This trademark covers Class 042 (Scientific, technology & SaaS services).

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Full conflict analysis for CT-FLOW (SN 88481275) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

CT-FLOW (Reg. #6316344) is a registered US trademark that has been protecting its owner, Heartflow, Inc., since 2019. 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

Jun 20, 2019

SERIAL

88481275

REG#

6316344

REGISTERED

Apr 06, 2021

Filing Information

StatusREGISTERED

Filing DateJun 20, 2019

Serial Number88481275

Registration No.6316344

Registration DateApr 06, 2021

Status DateApr 06, 2021

Published for OppositionMay 26, 2020

Filing Basis & Declarations

Use Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 042Scientific, technology & SaaS services

US codes: 100, 101

First use anywhere: Sep 05, 2019

First use in commerce: Sep 05, 2019

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

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Status History

26 events

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

Apr 15, 2026

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Apr 15, 2026

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Apr 15, 2026

TEAS CHANGE OF CORRESPONDENCE RECEIVED

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

Apr 06, 2026

COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED

REGISTERED-PRINCIPAL REGISTER

Apr 06, 2021

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Mar 04, 2021

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Mar 03, 2021

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Feb 09, 2021

CASE ASSIGNED TO INTENT TO USE PARALEGAL

STATEMENT OF USE PROCESSING COMPLETE

Feb 09, 2021

STATEMENT OF USE PROCESSING COMPLETE

TEAS STATEMENT OF USE RECEIVED

Jan 21, 2021

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

Jan 21, 2021

USE AMENDMENT FILED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Jul 21, 2020

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

May 26, 2020

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

May 26, 2020

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

May 06, 2020

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Apr 14, 2020

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Mar 12, 2020

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Mar 12, 2020

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Mar 12, 2020

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Sep 14, 2019

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Sep 14, 2019

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Sep 14, 2019

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Sep 11, 2019

ASSIGNED TO EXAMINER

NOTICE OF DESIGN SEARCH CODE E-MAILED

Jul 02, 2019

NOTICE OF DESIGN SEARCH CODE E-MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Jun 30, 2019

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Jun 24, 2019

NEW APPLICATION ENTERED

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