KOSS CORPORATION logo

KOSS CORPORATION

86 Marks
Corp.
First Filed:Jun 7, 1971Latest Filed:Sep 10, 2025Address:4129 North Port Washington Avenue, Milwaukee, WI 53212-1052, US

Portfolio Overview

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2

Top Classes

Class 9
Electronics, Software & Scientific Equipment
56(65%)
Class 10
Medical Apparatus
12(14%)
Class 38
Telecommunications
9(10%)

TTAB Proceedings

Total Proceedings
41
As Plaintiff
39(95%)
As Defendant
2(5%)

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Trademark Activity Timeline(19802025)

Trademark Portfolio

88 results

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Filed
Registered
Last Activity
HEARING IS BELIEVING
PENDING
Owner:
Serial:99384694
Filed:Sep 10, 2025
Classes:10
Description: Hearing aids; Assistive listening device for the hearing impaired; Parts of acoustic apparatus for the hearing-impaired, namely, cerumen protection systems; Wireless transmitters and receivers for use with hearing aids; Hearing aids and structural parts therefor; Digital hearing aids; Electric hearing aids
KOSS
KOSS
Trademark
Combined
PENDING
Owner:
Serial:99384688
Filed:Sep 10, 2025
Classes:10
Description: Hearing aids; Assistive listening device for the hearing impaired; Parts of acoustic apparatus for the hearing-impaired, namely, cerumen protection systems; Wireless transmitters and receivers for use with hearing aids; Hearing aids and structural parts therefor; Digital hearing aids; Electric hearing aids
KOSS
KOSS
Trademark
Word
PENDING
Owner:
Serial:99384685
Filed:Sep 10, 2025
Classes:10
Description: Hearing aids; Assistive listening device for the hearing impaired; Parts of acoustic apparatus for the hearing-impaired, namely, cerumen protection systems; Wireless transmitters and receivers for use with hearing aids; Hearing aids and structural parts therefor; Digital hearing aids; Electric hearing aids
PORTA PRO
PORTA PRO
Trademark
Word
PENDING
Owner:
Serial:99384699
Filed:Sep 10, 2025
Classes:10
Description: Hearing aids; Assistive listening device for the hearing impaired; Parts of acoustic apparatus for the hearing-impaired, namely, cerumen protection systems; Wireless transmitters and receivers for use with hearing aids; Hearing aids and structural parts therefor; Digital hearing aids; Electric hearing aids
QUIET ZONE
QUIET ZONE
Trademark
Word
PENDING
Owner:
Serial:99384701
Filed:Sep 10, 2025
Classes:10
Description: Hearing aids; Assistive listening device for the hearing impaired; Parts of acoustic apparatus for the hearing-impaired, namely, cerumen protection systems; Wireless transmitters and receivers for use with hearing aids; Hearing aids and structural parts therefor; Digital hearing aids; Electric hearing aids
THE SOUND OF KOSS
THE SOUND OF KOSS
Trademark
Word
PENDING
Owner:
Serial:99384692
Filed:Sep 10, 2025
Classes:10
Description: Hearing aids; Assistive listening device for the hearing impaired; Parts of acoustic apparatus for the hearing-impaired, namely, cerumen protection systems; Wireless transmitters and receivers for use with hearing aids; Hearing aids and structural parts therefor; Digital hearing aids; Electric hearing aids
HEARING IS BELIEVING
ABANDONED
Owner:
Serial:90169255
Filed:Sep 9, 2020
Classes:10
KOSS
KOSS
Trademark
Combined
ABANDONED
Owner:
Serial:90169270
Filed:Sep 9, 2020
Classes:10
KOSS
KOSS
Trademark
Word
ABANDONED
Owner:
Serial:90169286
Filed:Sep 9, 2020
Classes:10
PORTA PRO
PORTA PRO
Trademark
Word
ABANDONED
Owner:
Serial:90169250
Filed:Sep 9, 2020
Classes:10
QUIET ZONE
QUIET ZONE
Trademark
Word
ABANDONED
Owner:
Serial:90169291
Filed:Sep 9, 2020
Classes:10
THE SOUND OF KOSS
THE SOUND OF KOSS
Trademark
Word
ABANDONED
Owner:
Serial:90169281
Filed:Sep 9, 2020
Classes:10
SPEC.AUDIO
SPEC.AUDIO
Trademark
Word
ABANDONED
Owner:
Serial:87893330
Filed:Apr 25, 2018
Classes:9
SPEC.AUDIO
SPEC.AUDIO
Trademark
Word
ABANDONED
Owner:
Serial:87893336
Filed:Apr 25, 2018
Classes:38
KOSS
KOSS
Trademark
Word
REGISTERED
Owner:
Serial:87397590
Filed:Apr 4, 2017
Classes:9
Registration:5296522
Registered:Sep 26, 2017
Description: Headphones; Headphones for receiving audio data wirelessly; headphone accessories, namely, headphone cushions, headphone pads, cord management systems, adapter plugs, audio cables, headphone cases, and earphone extension cords; wireless transmitters; telephone headsets; loudspeakers
KOSS
KOSS
Trademark
Stylized
REGISTERED
Owner:
Serial:87360223
Filed:Mar 6, 2017
Classes:9
Registration:5296251
Registered:Sep 26, 2017
Description: Headphones; Headphones for receiving audio data wirelessly; headphone accessories, namely, headphone cushions, headphone pads, cord management systems, adapter plugs, audio cables, headphone cases, and earphone extension cords; wireless transmitters; telephone headsets; loudspeakers
KOSS
KOSS
Trademark
Combined
REGISTERED
Owner:
Serial:87136877
Filed:Aug 12, 2016
Classes:9
Registration:5165967
Registered:Mar 21, 2017
Description: Headphones; headphones for receiving audio data wirelessly; headphone accessories, namely, headphone cushions, headphone pads, cord management systems, adapter plugs, audio cables, headphone cases, and earphone extension cords; wireless transmitters; telephone headsets [ ; loudspeakers ]
STRIVA
STRIVA
Trademark
Word
ABANDONED
Owner:
Serial:85859632
Filed:Feb 25, 2013
Classes:9
STRIVA
STRIVA
Trademark
Stylized
ABANDONED
Owner:
Serial:85859630
Filed:Feb 25, 2013
Classes:9
MYKOSS
MYKOSS
Trademark
Word
ABANDONED
Owner:
Serial:85846667
Filed:Feb 11, 2013
Classes:9
MYKOSS
MYKOSS
Service Mark
Word
ABANDONED
Owner:
Serial:85846670
Filed:Feb 11, 2013
Classes:38
STRIVA
STRIVA
Service Mark
Word
ABANDONED
Owner:
Serial:85846671
Filed:Feb 11, 2013
Classes:38
STRIVA
STRIVA
Trademark
Word
ABANDONED
Owner:
Serial:85846672
Filed:Feb 11, 2013
Classes:9
MYKOSS
MYKOSS
Service Mark
Word
ABANDONED
Owner:
Serial:85842652
Filed:Feb 6, 2013
Classes:42
STRIVA
STRIVA
Trademark
Stylized
ABANDONED
Owner:
Serial:85594048
Filed:Apr 10, 2012
Classes:9
STRIVA
STRIVA
Service Mark
Stylized
ABANDONED
Owner:
Serial:85594058
Filed:Apr 10, 2012
Classes:42
STRIVA
STRIVA
Service Mark
Stylized
ABANDONED
Owner:
Serial:85594056
Filed:Apr 10, 2012
Classes:41
STRIVA
STRIVA
Service Mark
Stylized
ABANDONED
Owner:
Serial:85594054
Filed:Apr 10, 2012
Classes:38
KOSS
KOSS
Trademark
Word
ABANDONED
Owner:
Serial:77899575
Filed:Dec 22, 2009
Classes:9, 38, 41, +1
Description: Class 9: Headphones for receiving audio data wirelessly; digital audio hardware incorporating a receiver and transmitter; digital video hardware incorporating a receiver and transmitter; digital content streaming devices, namely, receivers and transmitters for the delivery of digital video, digital audio, and streaming audio; wireless communication devices, namely, wireless portable media players that play audio content and wireless portable media players that play video content; accessories for digital audio hardware, namely, cables and docking stations; accessories for digital video hardware, namely, cables and docking stations; software, namely, software for listening to audio and viewing video; computer hardware and computer peripherals
Class 38: Transmission of information through a global computer network relating to the operation and configuration of audio devices; transmission of information through a global computer network relating to the operation and configuration of video devices; providing connections to sites featuring electronic delivery of audio and video content; providing an Internet website portal featuring connections to streaming audio, visual, and audiovisual material of others; providing a website featuring connections to sites featuring electronic delivery of audio and video content of others
Class 41: Entertainment services in the nature of providing personalized audio programming on a global computer network; entertainment information, namely, a non-downloadable on-line guide featuring information regarding audio programming; entertainment services in the nature of providing personalized video programming on a global computer network; entertainment information, namely, a non-downloadable on-line guide featuring information regarding video programming
Class 42: On-line device management services that allow users to remotely manage the information on and configure the preferences of video devices through a global computer network; on-line device management services that allow users to remotely manage the information on and configure the preferences of audio devices through a global computer network
SPARK PLUG
SPARK PLUG
Trademark
Word
REGISTERED
Owner:
Serial:77867473
Filed:Nov 6, 2009
Classes:9
Registration:3921717
Registered:Feb 22, 2011
Description: Headphones
PORTA PRO
PORTA PRO
Trademark
Word
REGISTERED
Owner:
Serial:77784612
Filed:Jul 20, 2009
Classes:9
Registration:3746791
Registered:Feb 9, 2010
Description: Headphones
MYKOSS
MYKOSS
Service Mark
Word
CANCELLED
Owner:
Serial:77779076
Filed:Jul 11, 2009
Classes:42
Registration:4422154
Registered:Oct 22, 2013
MYKOSS
MYKOSS
Service Mark
Word
CANCELLED
Owner:
Serial:77779080
Filed:Jul 11, 2009
Classes:42
Registration:4309355
Registered:Mar 26, 2013
MYKOSS
MYKOSS
Service Mark
Word
CANCELLED
Owner:
Serial:77779079
Filed:Jul 11, 2009
Classes:38
Registration:4517946
Registered:Apr 22, 2014
MYKOSS
MYKOSS
Service Mark
Word
CANCELLED
Owner:
Serial:77779077
Filed:Jul 11, 2009
Classes:38
Registration:4321314
Registered:Apr 16, 2013
STRIVA
STRIVA
Service Mark
Word
CANCELLED
Owner:
Serial:77773839
Filed:Jul 2, 2009
Classes:38
Registration:4522144
Registered:Apr 29, 2014
STRIVA
STRIVA
Service Mark
Word
CANCELLED
Owner:
Serial:77773845
Filed:Jul 2, 2009
Classes:38
Registration:4321309
Registered:Apr 16, 2013
STRIVA
STRIVA
Service Mark
Word
CANCELLED
Owner:
Serial:77773854
Filed:Jul 2, 2009
Classes:42
Registration:4517945
Registered:Apr 22, 2014
STRIVA
STRIVA
Trademark
Word
CANCELLED
Owner:
Serial:77773836
Filed:Jul 2, 2009
Classes:9
Registration:4321308
Registered:Apr 16, 2013
QUIET ZONE
QUIET ZONE
Trademark
Word
REGISTERED
Owner:
Serial:77281308
Filed:Sep 17, 2007
Classes:9
Registration:3582227
Registered:Mar 3, 2009
Description: Stereo headphones [ and ear buds ] with noise canceling feature [ and accessories therefor, namely, carrying cases specifically designed for carrying headphones and ear buds, plug adaptors, signal splitter cords and batteries ]
COBALT
COBALT
Trademark
Combined
CANCELLED
Owner:
Serial:78779007
Filed:Dec 22, 2005
Classes:9
Registration:3413018
Registered:Apr 15, 2008
COBALT
COBALT
Trademark
Word
CANCELLED
Owner:
Serial:78777351
Filed:Dec 20, 2005
Classes:9
Registration:3413014
Registered:Apr 15, 2008
TÜGO
TÜGO
Trademark
Combined
CANCELLED
Owner:
Serial:78763700
Filed:Nov 30, 2005
Classes:9
Registration:3304188
Registered:Oct 2, 2007
TUGO
TUGO
Trademark
Word
CANCELLED
Owner:
Serial:78714793
Filed:Sep 16, 2005
Classes:9
Registration:3303922
Registered:Oct 2, 2007
POP GLOSS
POP GLOSS
Trademark
Word
CANCELLED
Owner:
Serial:78363998
Filed:Feb 6, 2004
Classes:3
Registration:3030359
Registered:Dec 13, 2005
Description: "GLOSS"
SOUND AVENGER
SOUND AVENGER
Trademark
Word
CANCELLED
Owner:
Serial:78188145
Filed:Nov 22, 2002
Classes:25
Registration:2984328
Registered:Aug 9, 2005
Description: Clothing, namely, T-shirts, shirts, jackets, hats and caps
SOUND AVENGER
SOUND AVENGER
Trademark
Word
CANCELLED
Owner:
Serial:78188134
Filed:Nov 22, 2002
Classes:9
Registration:3006371
Registered:Oct 11, 2005
Description: Stereo headphones
SOUND AVENGER
SOUND AVENGER
Trademark
Word
CANCELLED
Owner:
Serial:78188140
Filed:Nov 22, 2002
Classes:16
Registration:3006372
Registered:Oct 11, 2005
Description: Comic books
BI AUDIO
BI AUDIO
Trademark
Word
CANCELLED
Owner:
Serial:75618371
Filed:Jan 8, 1999
Classes:9
Registration:2570353
Registered:May 14, 2002
Description: Audio head phones, head sets for telephones, cellular telephones, two-way radios, microphones, audio speakers and speakerphones; voice and speech recognition devices, namely, microphones, speakers, audio head phones, and computer hardware for voice and speech recognition; "AUDIO"
CHEESE HEADPHONES
CHEESE HEADPHONES
Trademark
Word
ABANDONED
Owner:
Serial:75410170
Filed:Dec 23, 1997
Classes:9
Description: Headphones, in International Class 9,
SPORT CLIP
SPORT CLIP
Trademark
Word
REGISTERED
Owner:
Serial:75081896
Filed:Apr 1, 1996
Classes:9
Registration:2166791
Registered:Jun 23, 1998
Description: Audio headphones; "CLIP"
HEARING IS BELIEVING
REGISTERED
Owner:
Serial:75022457
Filed:Nov 20, 1995
Classes:9
Registration:2152806
Registered:Apr 21, 1998
Description: Stereophones
OUTSIDERS
OUTSIDERS
Trademark
Word
CANCELLED
Owner:
Serial:74573414
Filed:Sep 14, 1994
Classes:9
Registration:2003527
Registered:Sep 24, 1996
Description: Indoor and outdoor loudspeakers
SPORTS CLIP
SPORTS CLIP
Trademark
Word
ABANDONED
Owner:
Serial:74555246
Filed:Jul 29, 1994
Classes:9
Description: Audio headphones
HARD DRIVERS
HARD DRIVERS
Trademark
Word
CANCELLED
Owner:
Serial:74239365
Filed:Jan 22, 1992
Classes:9
Registration:1736258
Registered:Dec 1, 1992
Description: Loudspeakers, for use such as in connection with computers
KOSS
KOSS
Trademark
Combined
CANCELLED
Owner:
Serial:74231812
Filed:Dec 19, 1991
Classes:9
Registration:2070098
Registered:Jun 10, 1997
Description: Clock radios, radios, audio systems comprising audio cassette players, audio systems comprising compact disc players, telephones, telephone answering machines, televisions and video cassette recorders
KOSS
KOSS
Trademark
Word
CANCELLED
Owner:
Serial:74231801
Filed:Dec 19, 1991
Classes:9
Registration:1821035
Registered:Feb 15, 1994
Description: Clock radios, radios, audio systems comprising audio cassette players, audio systems comprising compact disc players, [ telephones, telephone answering machines, televisions and video cassette recorders ]
KOSS
KOSS
Trademark
Stylized
CANCELLED
Owner:
Serial:74231837
Filed:Dec 19, 1991
Classes:9
Registration:1850556
Registered:Aug 23, 1994
Description: Clock radios, radios, audio systems comprising audio cassette players; audio systems comprising compact disc players [ ; telephones, telephone answering machines, televisions and video cassette recorders ]
- NO - SEE - UM -
- NO - SEE - UM -
Trademark
Word
CANCELLED
Owner:
Serial:74012053
Filed:Dec 18, 1989
Classes:9
Registration:1640908
Registered:Apr 9, 1991
KOSS CLASSICS
KOSS CLASSICS
Trademark
Combined
REGISTERED
Owner:
Serial:73814508
Filed:Jul 24, 1989
Classes:9
Registration:1583499
Registered:Feb 20, 1990
Description: PRERECORDED DIGITAL COMPACT DISCS, FEATURING MUSIC
KOSS CLASSICS
KOSS CLASSICS
Trademark
Word
REGISTERED
Owner:
Serial:73814507
Filed:Jul 24, 1989
Classes:9
Registration:1609464
Registered:Aug 7, 1990
Description: PRERECORDED DIGITAL COMPACT DISCS, FEATURING MUSIC
KOSS
KOSS
Trademark
Word
REGISTERED
Owner:
Serial:73812381
Filed:Jul 14, 1989
Classes:9
Registration:1602016
Registered:Jun 19, 1990
Description: [ INDUSTRIAL SAFETY HEARING PROTECTIVE HEAD SETS,] LOUDSPEAKERS [ AND PARTS THEREFOR ], STEREOPHONES, [ AND RELATED ACCESSORIES, namely, STEREOPHONE PLUG ADAPTERS, STEREOPHONE MONAURAL ADAPTERS, STEREOPHONE REPLACEMENT CUSHION SETS, COILED STEREOPHONE EXTENSION CORDS, STEREOPHONE SPEAKER SWITCHES, STEREOPHONE EXTENSION CABLES, STEREOPHONE PIN-TYPE ADAPTERS, STEREOPHONE PIN-TYPE EXTENSION CORDS, STEREOPHONE CONNECTOR BOXES, AND HAND HELD ELECTRIC CONTROL BOXES FOR USE WITH STEREOPHONES ]
KORDLESSPEAKERS
KORDLESSPEAKERS
Trademark
Word
CANCELLED
Owner:
Serial:73719219
Filed:Mar 28, 1988
Classes:9
Registration:1534877
Registered:Apr 11, 1989
Description: LOUDSPEAKERS AND INFRARED TRANSMITTERS
M/80 PLUS
M/80 PLUS
Trademark
Word
CANCELLED
Owner:
Serial:73636190
Filed:Dec 19, 1986
Classes:9
Registration:1453050
Registered:Aug 18, 1987
Description: LOUD SPEAKERS AND PARTS THEREFOR
FUN 'N FASHION
FUN 'N FASHION
Trademark
Word
CANCELLED
Owner:
Serial:73613849
Filed:Aug 8, 1986
Classes:9
Registration:1432812
Registered:Mar 17, 1987
Description: STEREOPHONES AND PARTS THEREFOR
MUSIC PALS
MUSIC PALS
Trademark
Word
CANCELLED
Owner:
Serial:73597440
Filed:May 8, 1986
Classes:9
Registration:1422649
Registered:Dec 30, 1986
Description: STEREOPHONES AND RELATED ACCESSORIES, NAMELY STEREOPHONE PLUG ADAPTERS, STEREOPHONE REPLACEMENT CUSHION SETS, STEREOPHONE HEAD ADAPTERS, AND STEREOPHONE CARRYING CASES
SOUND CELLS
SOUND CELLS
Trademark
Word
CANCELLED
Owner:
Serial:73597439
Filed:May 8, 1986
Classes:9
Registration:1422648
Registered:Dec 30, 1986
Description: LOUDSPEAKERS
SST
SST
Trademark
Word
CANCELLED
Owner:
Serial:73597520
Filed:May 8, 1986
Classes:9
Registration:1427292
Registered:Feb 3, 1987
Description: STEREO HEADPHONES AND RELATED ACCESSORIES, NAMELY, STEREO HEADPHONE PLUG ADAPTERS, STEREO HEADPHONE REPLACEMENT CUSHIONS AND HEAD ADAPTERS, AND HEADPHONE CARRYING CASES
HEARING IS BELIEVING
CANCELLED
Owner:
Serial:73240842
Filed:Nov 29, 1979
Classes:9
Registration:1166283
Registered:Aug 25, 1981
Description: Audio Signal Processors
HEARING IS BELIEVING
REGISTERED
Owner:
Serial:73216005
Filed:May 17, 1979
Classes:9
Registration:1162539
Registered:Jul 28, 1981
Description: Stereophones [ and Related Accessories-Namely, Stereophone Plug Adaptors, Stereophone Monoral Adaptors, Stereophone Replacement Cushion Sets, Coiled Stereophone Extension Cords, Stereophone Speaker Switches, Stereophone Extension Cables, Stereophone Pin-Type Adaptors, Stereophone Pin-Type Extension Cords, Chairside Listening Stations, Remote Control Stations, and Stereophone Connector Boxes ]
73177892
73177892
Trademark
Design
CANCELLED
Owner:
Serial:73177892
Filed:Jul 12, 1978
Classes:9
Registration:1128557
Registered:Jan 1, 1980
Description: STEREOPHONES, LOUDSPEAKERS, AND RELATED ACCESSORIES-NAMELY, STEREOPHONE PLUG ADAPTERS, STEREOPHONE MONAURAL ADAPTERS, STEREOPHONE REPLACEMENT CUSHION SETS, COILED STEREOPHONE EXTENSION CORDS, STEREOPHONE SPEAKER SWITCHES, STEREOPHONE EXTENSION CABLES, STEREOPHONE PIN-TYPE ADAPTERS, STEREOPHONE PINTYPE EXTENSION CORDS, CHAIR-SIDE STATIONS, REMOTE CONTROL STATIONS, AND STEREOPHONE CONNECTOR BOXES; DESIGN OF STEREOPHONE HEADSET
KOSS
KOSS
Trademark
Stylized
CANCELLED
Owner:
Serial:73167105
Filed:Apr 20, 1978
Classes:9
Registration:1138617
Registered:Aug 12, 1980
Description: LOUDSPEAKERS
KOSS
KOSS
Trademark
Combined
CANCELLED
Owner:
Serial:73167108
Filed:Apr 20, 1978
Classes:9
Registration:1114433
Registered:Mar 6, 1979
Description: LOUDSPEAKERS; THE REPRESENTATION OF A STEREOPHONE HEADSET
AUDITOR
AUDITOR
Trademark
Word
EXPIRED
Owner:
Serial:73116345
Filed:Feb 18, 1977
Classes:9
Registration:1077312
Registered:Nov 15, 1977
Description: ELECTROSTATIC STEREO HEADPHONES
PANORAMIC SOURCE CONTROLS
CANCELLED
Owner:
Serial:73077013
Filed:Feb 12, 1976
Classes:9
Registration:1060247
Registered:Mar 1, 1977
Description: STEREOPHONES; "SOURCE CONTROL"
EASY LISTENER
EASY LISTENER
Trademark
Word
EXPIRED
Owner:
Serial:73071951
Filed:Dec 15, 1975
Classes:9
Registration:1044038
Registered:Jul 20, 1976
Description: STEREO HEADPHONES
PHASE/2+2
PHASE/2+2
Trademark
Word
CANCELLED
Owner:
Serial:73071874
Filed:Dec 15, 1975
Classes:9
Registration:1049967
Registered:Oct 12, 1976
Description: HEADPHONES AND PROGRAMMER
PROGRAMMER
PROGRAMMER
Trademark
Word
EXPIRED
Owner:
Serial:73071873
Filed:Dec 15, 1975
Classes:9
Registration:1056505
Registered:Jan 18, 1977
Description: HAND HELD ELECTRIC CONTROL BOX FOR USE WITH STEREO HEADPHONES
TECHNICIAN/VFR
TECHNICIAN/VFR
Trademark
Word
EXPIRED
Owner:
Serial:73071875
Filed:Dec 15, 1975
Classes:9
Registration:1057443
Registered:Feb 1, 1977
Description: STEREO HEADPHONES
PNEUMALITE
PNEUMALITE
Trademark
Word
EXPIRED
Owner:
Serial:73040304
Filed:Dec 23, 1974
Classes:9
Registration:1028524
Registered:Dec 30, 1975
Description: STEREOPHONE EAR CUSHIONS MANUFACTURED BY APPLICANT BOTH FOR USE AS A COMPONENT PART OF STEREOPHONES MANUFACTURED BY APPLICANT AND FOR SALE SEPARATELY AS AN ACCESSORY OR REPLACEMENT PART