Who owns the FLATLINE trademark?

The FLATLINE trademark is owned by Liphatech, Inc..

What class is the FLATLINE trademark registered in?

The FLATLINE trademark is registered in Class 005 (Pharmaceuticals, medical & veterinary preparations).

What is the serial number for FLATLINE?

The USPTO serial number for FLATLINE is 87849504.

What is the registration number for FLATLINE?

FLATLINE is registered under USPTO registration number 6037689.

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Updated Sep 17, 2026·14 searches this week

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USPTO Trademark Record

REGISTERED

FLATLINE

SN 87849504·Reg 6037689·Filed Mar 26, 2018

Owner Liphatech, Inc.

Pharmaceuticals, medical and veterinary preparations; sanitary preparations for medical purposes; dietetic food and substances adapted for medical or veterinary purposes, food for babies; dietary supplements for human beings and animals; adhesive plasters, materials for dressings; material for filling teeth, dental wax; disinfectants; preparations for destroying vermin; fungicides, herbicides.

FLATLINE (Serial No. 87849504), Registration No. 6037689, is a registered US trademark filed on Mar 26, 2018 by Liphatech, Inc.. This trademark covers Class 005 (Pharmaceuticals, medical & veterinary preparations).

Section 8/9 declaration window: April 22, 2030

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Mark Intelligence

FLATLINE (Reg. #6037689) is a registered US trademark that has been protecting its owner, Liphatech, Inc., since 2018. The mark covers Class 005 (Pharmaceuticals, medical & veterinary preparations). Goods and services include Pharmaceuticals, medical and veterinary preparations; sanitary preparations for medical purposes; dietetic food and subs.... The mark faced 1 opposition proceeding during prosecution.

FILED

Mar 26, 2018

SERIAL

87849504

REG#

6037689

REGISTERED

Apr 21, 2020

Filing Information

StatusREGISTERED

Filing DateMar 26, 2018

Serial Number87849504

Registration No.6037689

Registration DateApr 21, 2020

Status DateNov 26, 2025

Published for OppositionSep 04, 2018

Filing Basis & Declarations

Standard Characters ClaimedUse Application CurrentlySection 8 AcceptedSection 15 AcknowledgedTrademark

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 005Pharmaceuticals, medical & veterinary preparations

US codes: 006, 018, 044, 046, 051, 052

First use anywhere: Jan 17, 2020

First use in commerce: Jan 17, 2020

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

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Status History

28 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Nov 26, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

Nov 26, 2025

REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

Nov 26, 2025

NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED

TEAS SECTION 8 & 15 RECEIVED

Aug 12, 2025

TEAS SECTION 8 & 15 RECEIVED

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

Apr 21, 2025

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

REGISTERED-PRINCIPAL REGISTER

Apr 21, 2020

REGISTERED-PRINCIPAL REGISTER

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

Mar 17, 2020

NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Mar 14, 2020

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

CASE ASSIGNED TO INTENT TO USE PARALEGAL

Feb 25, 2020

CASE ASSIGNED TO INTENT TO USE PARALEGAL

STATEMENT OF USE PROCESSING COMPLETE

Feb 25, 2020

STATEMENT OF USE PROCESSING COMPLETE

TEAS STATEMENT OF USE RECEIVED

Feb 05, 2020

TEAS STATEMENT OF USE RECEIVED

USE AMENDMENT FILED

Feb 05, 2020

USE AMENDMENT FILED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

May 07, 2019

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU EXTENSION 2 FILED

May 03, 2019

SOU EXTENSION 2 FILED

SOU TEAS EXTENSION RECEIVED

May 03, 2019

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 2 GRANTED

May 03, 2019

SOU EXTENSION 2 GRANTED

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

Mar 27, 2019

NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED

SOU EXTENSION 1 FILED

Mar 25, 2019

SOU EXTENSION 1 FILED

SOU TEAS EXTENSION RECEIVED

Mar 25, 2019

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 1 GRANTED

Mar 25, 2019

SOU EXTENSION 1 GRANTED

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

Oct 30, 2018

NOA E-MAILED - SOU REQUIRED FROM APPLICANT

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Sep 04, 2018

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

PUBLISHED FOR OPPOSITION

Sep 04, 2018

PUBLISHED FOR OPPOSITION

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Aug 15, 2018

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

APPROVED FOR PUB - PRINCIPAL REGISTER

Jul 24, 2018

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Jul 11, 2018

ASSIGNED TO EXAMINER

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Apr 02, 2018

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Mar 29, 2018

NEW APPLICATION ENTERED

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