Who owns the F5 trademark?

The F5 trademark is owned by F5 Networks, Inc..

What is the serial number for F5?

The USPTO serial number for F5 is 77882479.

What is the registration number for F5?

F5 is registered under USPTO registration number 3859461.

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Updated Sep 19, 2026·11 searches this week

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USPTO Trademark Record

ABANDONED

F5

Q: What class is the F5 trademark registered in?

The F5 trademark is registered in Class 038 (Telecommunications services), Class 041 (Education & entertainment services).

SN 77882479·Reg 3859461·Filed Nov 30, 2009

Owner F5 Networks, Inc.

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

F5 (Serial No. 77882479), Registration No. 3859461, is a abandoned US trademark filed on Nov 30, 2009 by F5 Networks, Inc.. This trademark covers Class 038 (Telecommunications services), Class 041 (Education & entertainment services).

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Full conflict analysis for F5 (SN 77882479) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

F5 (Reg. #3859461) is an abandoned US trademark that was filed in 2009 but has since been abandoned. The mark covers Class 038 (Telecommunications services) and Class 041 (Education & entertainment services) respectively. Goods and services include Telecommunications.; Education; providing of training; entertainment; sporting and cultural activities.. The mark faced 1 opposition proceeding during prosecution.

FILED

Nov 30, 2009

SERIAL

77882479

REG#

3859461

REGISTERED

Oct 12, 2010

Filing Information

StatusABANDONED

Filing DateNov 30, 2009

Serial Number77882479

Registration No.3859461

Registration DateOct 12, 2010

Status DateMay 19, 2017

Published for OppositionJul 27, 2010

Filing Basis & Declarations

Filed as Use ApplicationUse Application Currently

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 038Telecommunications services

US codes: 100, 101, 104

First use anywhere: Jun 09, 2003

First use in commerce: Jun 09, 2003

Telecommunications.

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: Jun 09, 2003

First use in commerce: Jun 09, 2003

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

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

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Status History

22 events

CANCELLED SEC. 8 (6-YR)

May 19, 2017

CANCELLED SEC. 8 (6-YR)

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 09, 2016

TEAS CHANGE OF CORRESPONDENCE RECEIVED

REGISTERED-PRINCIPAL REGISTER

Oct 12, 2010

REGISTERED-PRINCIPAL REGISTER

PUBLISHED FOR OPPOSITION

Jul 27, 2010

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Jul 27, 2010

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

ASSIGNED TO LIE

Jun 24, 2010

ASSIGNED TO LIE

LAW OFFICE PUBLICATION REVIEW COMPLETED

Jun 24, 2010

LAW OFFICE PUBLICATION REVIEW COMPLETED

EXAMINERS AMENDMENT -WRITTEN

Jun 10, 2010

EXAMINERS AMENDMENT -WRITTEN

EXAMINERS AMENDMENT E-MAILED

Jun 10, 2010

EXAMINERS AMENDMENT E-MAILED

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

Jun 10, 2010

NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED

EXAMINER'S AMENDMENT ENTERED

Jun 10, 2010

EXAMINER'S AMENDMENT ENTERED

APPROVED FOR PUB - PRINCIPAL REGISTER

Jun 10, 2010

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jun 02, 2010

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jun 02, 2010

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Jun 02, 2010

TEAS/EMAIL CORRESPONDENCE ENTERED

NON-FINAL ACTION WRITTEN

Mar 04, 2010

NON-FINAL ACTION WRITTEN

NON-FINAL ACTION E-MAILED

Mar 04, 2010

NON-FINAL ACTION E-MAILED

NOTIFICATION OF NON-FINAL ACTION E-MAILED

Mar 04, 2010

NOTIFICATION OF NON-FINAL ACTION E-MAILED

ASSIGNED TO EXAMINER

Feb 25, 2010

ASSIGNED TO EXAMINER

NOTICE OF DESIGN SEARCH CODE MAILED

Dec 08, 2009

NOTICE OF DESIGN SEARCH CODE MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Dec 07, 2009

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

NEW APPLICATION ENTERED

Dec 03, 2009

NEW APPLICATION ENTERED

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