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 013 (Firearms, ammunition & explosives).

What is the serial number for FO?

The USPTO serial number for FO is 88916530.

What is the registration number for FO?

FO is registered under USPTO registration number 6210939.

Sealvo

Home Search: FOFO #88916530

Back

Updated Oct 30, 2026·23 searches this week

View on USPTO TSDR Find similar marks

Section 8 declaration window

December 01, 2026

31 days remaining

FO

REGISTERED

Serial: 88916530
Reg: 6210939
Filed: May 14, 2020
Owner: Flatline Ops, Inc.

Firearms; ammunition and projectiles; explosives; fireworks.

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 013Firearms, ammunition & explosives

US codes: 002, 009

First use anywhere: Dec 01, 2012

First use in commerce: Dec 01, 2012

Firearms; ammunition and projectiles; explosives; fireworks.

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

Status History

15 events

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

Dec 01, 2025

Code REM1

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Aug 02, 2021

Code ARAA

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Aug 02, 2021

Code CHAN

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Aug 02, 2021

Code TCCA

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

Aug 02, 2021

Code REAP

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Aug 02, 2021

Code COAR

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

FO

What to file next

Full Goods & Services

Filing Basis & Declarations

Other Marks by Flatline Ops, Inc.

Other Marks by Eric B. Fugett

Get pre-filing clearance

Search 14M+ trademarks

Run a conflict check

Industries

USPTO Deadlines

Compare

Resources

Company