Who owns the FLATLINE trademark?

The FLATLINE trademark is owned by Flatline, LLC.

What is the serial number for FLATLINE?

The USPTO serial number for FLATLINE is 98707188.

What is the registration number for FLATLINE?

FLATLINE is registered under USPTO registration number 8297260.

FLATLINE - Owned by Flatline, LLC - (Class 009, Class 041)

Q: What class is the FLATLINE trademark registered in?

The FLATLINE trademark is registered in Class 009 (Electronics, software & scientific instruments), Class 041 (Education & entertainment services).

What to file next

Section 8 declaration of continued use

When: Due between the fifth and sixth anniversary of registration.
Extensions and grace: A six-month grace period follows, with an added per-class fee.
If it is missed: A missed Section 8 cancels the registration, and there is no revival route for it.

How the Section 8 deadline works

General information about USPTO practice, not legal advice. The register is the authority, and a filing that has not yet posted can change what is owed.

Full Goods & Services

Class 009Electronics, software & scientific instruments

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

First use anywhere: Sep 13, 2024

First use in commerce: Sep 13, 2024

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.

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: Oct 25, 2021

First use in commerce: Oct 25, 2021

Education; providing of training; entertainment; sporting and cultural activities.

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

Filing Basis & Declarations

Filed as Use ApplicationUse Application CurrentlyTrademark

Status History

27 events

REGISTERED-PRINCIPAL REGISTER

Jun 09, 2026

Code R.PR

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Jun 09, 2026

Code NRCC

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

May 19, 2026

Code CNPR

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

May 19, 2026

Code SUNA

STATEMENT OF USE PROCESSING COMPLETE

Apr 28, 2026

Code SUPC

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Dec 02, 2025

Code NOAM

TEAS STATEMENT OF USE RECEIVED

Dec 02, 2025

Code EISU

USE AMENDMENT FILED

Dec 02, 2025

Code IUAF

PUBLISHED FOR OPPOSITION

Oct 07, 2025

Code PUBO

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Oct 07, 2025

Code NPUB

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Oct 01, 2025

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Sep 08, 2025

Code CNSA

DATA MODIFICATION COMPLETED

Sep 05, 2025

Code DMCC

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Sep 03, 2025

Code TROA

CORRESPONDENCE RECEIVED IN LAW OFFICE

Sep 03, 2025

Code CRFA

TEAS/EMAIL CORRESPONDENCE ENTERED

Sep 03, 2025

Code TEME

APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED

Jun 11, 2025

Code XELR

APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED

Jun 11, 2025

Code XELG

NON-FINAL ACTION WRITTEN

Mar 12, 2025

Code CNRT

NON-FINAL ACTION E-MAILED

Mar 12, 2025

Code GNRT

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 12, 2025

Code GNRN

ASSIGNED TO EXAMINER

Mar 05, 2025

Code DOCK

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Mar 04, 2025

Code NWOS

NOTICE OF DESIGN SEARCH CODE E-MAILED

Mar 04, 2025

Code MDSM

TEAS VOLUNTARY AMENDMENT RECEIVED

Aug 22, 2024

Code PARI

TEAS AMENDMENT ENTERED BEFORE ATTORNEY ASSIGNED

Aug 22, 2024

Code TAEA

NEW APPLICATION ENTERED

Aug 20, 2024

Code NWAP

Other Marks by Flatline, LLC

Additional USPTO filings from the same owner.

FLA

FLATLINE

98332521

FLATLINE, LLC

REGISTERED

FVC

97205031

FLATLINE, LLC

REGISTERED

FLA

FLATLINE

99644510

Flatline, LLC

PENDING

Other Marks in Class 009 — Electronics, software & scientific instruments

Recently filed and registered marks in the same international class.

FLA

FLATLINE

99644510

Flatline, LLC

PENDING

FLA

FLATLINE

85660643

Trans Terra Corporation

ABANDONED

FLA

FLATLINE

77641500

Trans Terra Corporation

ABANDONED

FLA

FLATLINE

75863598

CARTER, WAYNE

ABANDONED

FLATLINE

What to file next

Full Goods & Services

Filing Basis & Declarations

Other Marks by Flatline, LLC

Other Marks in Class 009 — Electronics, software & scientific instruments

Get pre-filing clearance

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