Who owns the FO trademark?

The FO trademark is owned by Flatline Ops, Inc..

What class is the FO trademark registered in?

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

What is the serial number for FO?

The USPTO serial number for FO is 88916526.

What is the registration number for FO?

FO is registered under USPTO registration number 6210938.

FO - Owned by Flatline Ops, Inc. - (Class 009)

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 30, 2010

First use in commerce: Sep 30, 2010

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.

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

15 events

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

Dec 01, 2025

Code REM1

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 02, 2021

Code TCCA

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 02, 2021

Code ARAA

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Aug 02, 2021

Code COAR

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

Aug 02, 2021

Code REAP

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Aug 02, 2021

Code CHAN

REGISTERED-PRINCIPAL REGISTER

Dec 01, 2020

Code R.PR

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Sep 15, 2020

Code NPUB

PUBLISHED FOR OPPOSITION

Sep 15, 2020

Code PUBO

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Aug 26, 2020

Code NONP

APPROVED FOR PUB - PRINCIPAL REGISTER

Aug 13, 2020

Code CNSA

ASSIGNED TO EXAMINER

Aug 12, 2020

Code DOCK

NOTICE OF DESIGN SEARCH CODE E-MAILED

May 29, 2020

Code MDSM

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

May 28, 2020

Code NWOS

NEW APPLICATION ENTERED

May 18, 2020

Code NWAP

Other Marks by Flatline Ops, Inc.

Additional USPTO filings from the same owner.

FLA

FLATLINE OPS

88916523

Flatline Ops, Inc.

REGISTERED

FLA

FLATLINE OPS

88916517

Flatline Ops, Inc.

REGISTERED

88916530

Flatline Ops, Inc.

REGISTERED

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FO

What to file next

Full Goods & Services

Filing Basis & Declarations

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

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