Def Con Communications, Inc. logo

Def Con Communications, Inc.

17 Live Marks
27 on record
Corp.
First Filed:Oct 10, 2000Latest Filed:Aug 28, 2025Address:2606 2nd Avenue, Suite 406, Seattle, WA 98121, US

Portfolio Overview

Top Classes

Class 41
Education and Entertainment
18(67%)
Class 9
Electronics, Software & Scientific Equipment
4(15%)
Class 38
Telecommunications
2(7%)

TTAB Proceedings

Proceedings
4
As Plaintiff
4(100%)
As Defendant
0(0%)
Extensions of Time
10

Top Firms

Loading...

Trademark Activity Timeline(2000 – 2026)

Trademark Portfolio

27 results

(current & previous marks)

Refine by Mark/Description🔽
Filed
Registered
Last Activity
99363390
99363390
Service Mark
Design
REGISTERED
Owner:
Serial:99363390
Filed:Aug 28, 2025
Classes:41
Registration:8203266
Registered:Apr 7, 2026
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DEF CON
DEF CON
Service Mark
Word
PENDING
Owner:
Serial:98484808
Filed:Apr 4, 2024
Classes:41, 42
Description: Class 38: Arranging and conducting online educational forums in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security
Class 41: Educational services, namely, providing educational examinations for certifications and trainings for certification in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security, and production being distribution of educational and instructional materials in connection therewith; educational services, namely, providing training, conferences, and organizing educational programming in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security for certification purposes, and production being distribution of educational and instructional materials in connection therewith
Class 42: Consulting services in the fields of artificial intelligence technology, cybersecurity in the nature of restricting unauthorized access to computer systems, computer and network security, computer information security, data security, and internet security; technical consulting services in the field of cybersecurity
DEF CON
DEF CON
Service Mark
Word
REGISTERED
Owner:
Serial:98977205
Filed:Apr 4, 2024
Classes:38, 41
Registration:8097344
Registered:Jan 6, 2026
Description: Class 38: Arranging and conducting online educational forums in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security
Class 41: Educational services, namely, providing training, conferences, and organizing educational programming in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security, and production being distribution of educational and instructional materials in connection therewith; publishing of books, magazines, journals, pamphlets, and electronic publications in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security; arranging and conducting in-person and online training, conferences, and in-person educational forums in the field of artificial intelligence as applied to cybersecurity, computer and network security, information security, data security, and internet security; technical consulting services in the field of cybersecurity risk management training
DEF CON
DEF CON
Service Mark
Word
REGISTERED
Owner:
Serial:98062479
Filed:Jun 28, 2023
Classes:38, 41
Registration:7485501
Registered:Aug 27, 2024
Description: Class 38: Arranging and conducting online educational forums in the fields of computer and network security, information security, data security, and internet security
Class 41: Training in computer programming, namely, organizing educational programming in the fields of computer and network security, information security, data security, and internet security, including the production and rental of educational and instructional materials; providing training in the fields of computer and network security, information security, data security, and internet security for certification purposes, including the production and rental of educational and instructional materials; publishing of books, magazines, journals, pamphlets, and electronic publications in the fields of computer and network security, information security, data security, and internet security; arranging and conducting in-person education forums in the fields of computer and network security, information security, data security, and internet security
DEFCON
DEFCON
Trademark
Combined
PENDING
Owner:
Serial:98062483
Filed:Jun 28, 2023
Classes:25
Description: Clothing, namely, hats, caps being headwear, t-shirts, sweatshirts, hoodies, and clothing jackets; jackets; all of the foregoing excluding athletic protective gear, athletic helmets, athletic face-shields, athletic shin guards, athletic gloves, athletic spikes, athletic cleats, athletic turf shoes, and other footwear designed for athletic performance
DISOBEY
DISOBEY
Service Mark
Combined
REGISTERED
Owner:
Serial:97853052
Filed:Mar 23, 2023
Classes:41
Registration:7453558
Registered:Jul 23, 2024
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
SINCE 1993
SINCE 1993
Service Mark
Combined
REGISTERED
Owner:
Serial:88870280
Filed:Apr 13, 2020
Classes:41
Registration:6775429
Registered:Jun 28, 2022
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DISOBEY
DISOBEY
Service Mark
Combined
REGISTERED
Owner:
Serial:88451285
Filed:May 29, 2019
Classes:41
Registration:6925245
Registered:Dec 13, 2022
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DISOBEY
DISOBEY
Service Mark
Combined
REGISTERED
Owner:
Serial:88451321
Filed:May 29, 2019
Classes:41
Registration:6931392
Registered:Dec 20, 2022
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DISOBEY
DISOBEY
Service Mark
Combined
REGISTERED
Owner:
Serial:88451303
Filed:May 29, 2019
Classes:41
Registration:6931391
Registered:Dec 20, 2022
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DISOBEY
DISOBEY
Service Mark
Combined
ABANDONED
Owner:
Serial:88289876
Filed:Feb 5, 2019
Classes:41
87284774
87284774
Service Mark
Design
REGISTERED
Owner:
Serial:87284774
Filed:Dec 29, 2016
Classes:41
Registration:5776014
Registered:Jun 11, 2019
Description: Educational services, namely, educational seminars, classes, speaker series in the nature of providing educational speakers, conferences and training in the nature of workshops in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
87284776
87284776
Service Mark
Design
REGISTERED
Owner:
Serial:87284776
Filed:Dec 29, 2016
Classes:41
Registration:5728344
Registered:Apr 16, 2019
Description: Educational services, namely, educational seminars, classes, speaker series in the nature of providing educational speakers, conferences and training in the nature of workshops in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
85951638
85951638
Service Mark
Design
REGISTERED
Owner:
Serial:85951638
Filed:Jun 5, 2013
Classes:41
Registration:4465992
Registered:Jan 14, 2014
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DEFCON
DEFCON
Service Mark
Combined
REGISTERED
Owner:
Serial:85845309
Filed:Feb 8, 2013
Classes:41
Registration:4582595
Registered:Aug 12, 2014
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; computer and computer software education training
DEF CON
DEF CON
Trademark
Word
REGISTERED
Owner:
Serial:85664662
Filed:Jun 28, 2012
Classes:9
Registration:4455939
Registered:Dec 24, 2013
Description: Electronically encoded badges and associated software used to record and store information, to allow communication between devices, and for controlling access to secured conference events
DARK TANGENT
DARK TANGENT
Trademark
Word
ABANDONED
Owner:
Serial:77903111
Filed:Dec 30, 2009
Classes:16
Description: Printed goods, namely, texts, fiction and non-fiction books, syndicated and editorial columns, newsletters, instruction manuals and magazines in the fields of computer and Internet security, computer network security, data and telephony network security, network technology, computers, computer software, hardware, information technology, cryptography, privacy, and physical security
DARK TANGENT
DARK TANGENT
Service Mark
Word
REGISTERED
Owner:
Serial:77817966
Filed:Sep 1, 2009
Classes:41
Registration:3827216
Registered:Aug 3, 2010
Description: Online journals, namely a blog featuring information and commentary in the field of computers, computer security, the Internet, and computer hacking
DARK TANGENT
DARK TANGENT
Trademark
Word
ABANDONED
Owner:
Serial:77769149
Filed:Jun 26, 2009
Classes:9
DARK TANGENT
DARK TANGENT
Service Mark
Word
ABANDONED
Owner:
Serial:77769168
Filed:Jun 26, 2009
Classes:41
DARK TANGENT
DARK TANGENT
Service Mark
Word
ABANDONED
Owner:
Serial:78671367
Filed:Jul 15, 2005
Classes:41
DARK TANGENT
DARK TANGENT
Trademark
Word
ABANDONED
Owner:
Serial:78671362
Filed:Jul 15, 2005
Classes:16
DARK TANGENT
DARK TANGENT
Trademark
Word
ABANDONED
Owner:
Serial:78671365
Filed:Jul 15, 2005
Classes:9
DEF CON
DEF CON
Service Mark
Word
REGISTERED
Owner:
Serial:78345523
Filed:Dec 24, 2003
Classes:41
Registration:3009498
Registered:Oct 25, 2005
Description: Educational seminars, classes, speaker series, conferences and training in the fields of computer and network security, information security, data and telephony network security, Internet security, computer and network technology, computer and network hardware, and computer and network software; training in the use and operation of computers and computer software; and computer and computer software education training
DEF CON
DEF CON
Trademark
Word
CANCELLED
Owner:
Serial:76172548
Filed:Nov 29, 2000
Classes:9
Registration:3107144
Registered:Jun 20, 2006
DEF CON
DEF CON
Service Mark
Word
ABANDONED
Owner:
Serial:76172547
Filed:Nov 29, 2000
Classes:41
DEF CON
DEF CON
Service Mark
Word
ABANDONED
Owner:
Serial:76143685
Filed:Oct 10, 2000
Classes:35