Who owns the DEF CON trademark?

The DEF CON trademark is owned by Def Con Communications, Inc..

What class is the DEF CON trademark registered in?

The DEF CON trademark is registered in Class 041 (Education & entertainment services).

What is the serial number for DEF CON?

The USPTO serial number for DEF CON is 78345523.

What is the registration number for DEF CON?

DEF CON is registered under USPTO registration number 3009498.

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DEF

USPTO Trademark Record

REGISTERED

DEF CON

SN 78345523·Reg 3009498·Filed Dec 24, 2003

Owner Def Con Communications, Inc.

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

DEF CON (Serial No. 78345523), Registration No. 3009498, is a registered US trademark filed on Dec 24, 2003 by Def Con Communications, Inc.. This trademark covers Class 041 (Education & entertainment services).

Section 8/9 declaration window: October 25, 2035

Conflict Analysis

Full conflict analysis for DEF CON (SN 78345523) against the USPTO database with detailed risk factor explanations. AI-powered — takes ~1-2 min.

Mark Intelligence

DEF CON (Reg. #3009498) is a registered US trademark that has been protecting its owner, Def Con Communications, Inc., since 2003. The mark covers Class 041 (Education & entertainment services). Goods and services include Education; providing of training; entertainment; sporting and cultural activities.. The mark faced 1 opposition proceeding during prosecution.

FILED

Dec 24, 2003

SERIAL

78345523

REG#

3009498

REGISTERED

Oct 25, 2005

Filing Information

StatusREGISTERED

Filing DateDec 24, 2003

Serial Number78345523

Registration No.3009498

Registration DateOct 25, 2005

Status DateDec 10, 2025

Published for OppositionNov 16, 2004

Filing Basis & Declarations

Standard Characters ClaimedUse Application CurrentlySection 8 AcceptedSection 15 Acknowledged

International Filings

Madrid Protocol1 filings

This mark has 1 Madrid Protocol filing on record with the USPTO.

1253162

480Apr 21, 2015

Source: USPTO Madrid International Filing Requests

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 041Education & entertainment services

US codes: 100, 101, 107

First use anywhere: Dec 01, 1992

First use in commerce: Jul 10, 1993

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

40 events

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Dec 10, 2025

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Dec 10, 2025

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

Dec 10, 2025

REGISTERED AND RENEWED (SECOND RENEWAL - 10 YRS)

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

Dec 10, 2025

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

TEAS SECTION 8 & 9 RECEIVED

Aug 28, 2025

TEAS SECTION 8 & 9 RECEIVED

COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED

Oct 25, 2024

COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED

TEAS CHANGE OF OWNER ADDRESS RECEIVED

Mar 30, 2022

TEAS CHANGE OF OWNER ADDRESS RECEIVED

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

Mar 30, 2022

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

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

Mar 30, 2022

ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED

TEAS CHANGE OF CORRESPONDENCE RECEIVED

Mar 30, 2022

TEAS CHANGE OF CORRESPONDENCE RECEIVED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Mar 30, 2022

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

Jan 07, 2016

REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

Jan 07, 2016

REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

Jan 07, 2016

NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Jan 05, 2016

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

TEAS SECTION 8 & 9 RECEIVED

Oct 27, 2015

TEAS SECTION 8 & 9 RECEIVED

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

Feb 17, 2011

CASE ASSIGNED TO POST REGISTRATION PARALEGAL

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

Feb 17, 2011

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

TEAS SECTION 8 & 15 RECEIVED

Feb 03, 2011

TEAS SECTION 8 & 15 RECEIVED

REVIEW OF CORRESPONDENCE COMPLETE

Oct 20, 2006

REVIEW OF CORRESPONDENCE COMPLETE

PAPER RECEIVED

Apr 11, 2006

PAPER RECEIVED

REGISTERED-PRINCIPAL REGISTER

Oct 25, 2005

REGISTERED-PRINCIPAL REGISTER

LAW OFFICE REGISTRATION REVIEW COMPLETED

Sep 14, 2005

LAW OFFICE REGISTRATION REVIEW COMPLETED

SOU EXTENSION 1 GRANTED

Jul 13, 2005

SOU EXTENSION 1 GRANTED

STATEMENT OF USE PROCESSING COMPLETE

Jul 13, 2005

STATEMENT OF USE PROCESSING COMPLETE

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

Jul 13, 2005

ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED

TEAS STATEMENT OF USE RECEIVED

Jul 05, 2005

TEAS STATEMENT OF USE RECEIVED

SOU TEAS EXTENSION RECEIVED

Jul 05, 2005

SOU TEAS EXTENSION RECEIVED

SOU EXTENSION 1 FILED

Jul 05, 2005

SOU EXTENSION 1 FILED

USE AMENDMENT FILED

Jul 05, 2005

USE AMENDMENT FILED

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

Jun 03, 2005

APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED

PAPER RECEIVED

Mar 25, 2005

PAPER RECEIVED

NOA MAILED - SOU REQUIRED FROM APPLICANT

Feb 08, 2005

NOA MAILED - SOU REQUIRED FROM APPLICANT

PUBLISHED FOR OPPOSITION

Nov 16, 2004

PUBLISHED FOR OPPOSITION

NOTICE OF PUBLICATION

Oct 27, 2004

NOTICE OF PUBLICATION

LAW OFFICE PUBLICATION REVIEW COMPLETED

Sep 14, 2004

LAW OFFICE PUBLICATION REVIEW COMPLETED

ASSIGNED TO LIE

Sep 10, 2004

ASSIGNED TO LIE

APPROVED FOR PUB - PRINCIPAL REGISTER

Aug 28, 2004

APPROVED FOR PUB - PRINCIPAL REGISTER

ASSIGNED TO EXAMINER

Jul 26, 2004

ASSIGNED TO EXAMINER

NEW APPLICATION ENTERED

Jan 07, 2004

NEW APPLICATION ENTERED

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