TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
06/18/2026
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Official data from USPTO
KNOCK KNOCK
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Active USPTO registrationType: WordOffice: United States
Risk and opportunity diagnosis
Executive reading for naming, filing, and monitoring decisions.
USPTO status
Active USPTO registration
Case type
Application and registration
Recorded events
65
Latest update
06/30/2026
Trademark type
Word
Nice classes
16
Filing date
10/31/2014
Registration date
05/24/2016
Expiration date
-
Complete case details
Structured fields from the responsible authority and the official record.
Status date
06/09/2026
Last transaction
06/30/2026
Responsible office
United States Patent and Trademark Office
Status code
800
Official register
Principal Register
Filing basis
Intent to use
First use anywhere
07/01/2014
First use in commerce
07/01/2014
Drawing code
4
Owner type
03
Owner location
NEW YORK, NY, US
Examiner
WANG, WEN HSING
Current location
PUBLICATION AND ISSUE SECTION
Holders and representatives
Holders
HACHETTE BOOK GROUP, INC.
KNOCK KNOCK, LLC
KNOCK KNOCK, LLC
Who's There, Inc.
Representatives
Erin Hennessy AKERMAN LLP
Technical classification
Nice Classes
Class 16
Vienna Codes
No Vienna codes available.
Goods and services
Class 16
Publications and printed matter; namelynote cards and blank cards
Publications
History of USPTO decisions and trademark events.
65 publications found
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
06/18/2026
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
06/18/2026
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
06/18/2026
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
06/18/2026
NA89
NOTICE OF ACCEPTANCE OF SEC. 8 & 9 - E-MAILED
06/09/2026
RNL1
REGISTERED AND RENEWED (FIRST RENEWAL - 10 YRS)
06/09/2026
89AG
REGISTERED - SEC. 8 (10-YR) ACCEPTED/SEC. 9 GRANTED
06/09/2026
APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
06/09/2026
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
06/07/2026
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
06/07/2026
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
06/07/2026
E89R
TEAS SECTION 8 & 9 RECEIVED
04/06/2026
REM2
COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED
05/24/2025
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
02/03/2025
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
02/03/2025
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
02/03/2025
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
02/03/2025
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
02/03/2025
ASGN
AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP
01/29/2025
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
01/23/2025
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
01/23/2025
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
01/23/2025
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
01/23/2025
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
01/23/2025
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
02/15/2024
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
02/15/2024
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
02/15/2024
NA85
NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED
08/16/2022
C15A
REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK.
08/16/2022
APRE
CASE ASSIGNED TO POST REGISTRATION PARALEGAL
08/16/2022
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
05/23/2022
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
05/23/2022
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
05/23/2022
E815
TEAS SECTION 8 & 15 RECEIVED
02/28/2022
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
06/23/2021
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
06/23/2021
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
06/23/2021
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
06/23/2021
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
06/23/2021
REM1
COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED
05/24/2021
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
01/27/2020
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
01/27/2020
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
06/05/2018
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
06/05/2018
R.PR
REGISTERED-PRINCIPAL REGISTER
05/24/2016
SUNA
NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED
04/16/2016
CNPR
ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED
04/15/2016
SUPC
STATEMENT OF USE PROCESSING COMPLETE
03/30/2016
IUAF
USE AMENDMENT FILED
03/03/2016
EISU
TEAS STATEMENT OF USE RECEIVED
03/03/2016
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
02/03/2016
EXRA
NOTICE OF APPROVAL OF EXTENSION REQUEST MAILED
11/24/2015
EX1G
SOU EXTENSION 1 GRANTED
11/23/2015
AITU
CASE ASSIGNED TO INTENT TO USE PARALEGAL
11/20/2015
EXT1
SOU EXTENSION 1 FILED
11/09/2015
EEXT
SOU TEAS EXTENSION RECEIVED
11/09/2015
NOAM
NOA MAILED - SOU REQUIRED FROM APPLICANT
06/02/2015
PUBO
PUBLISHED FOR OPPOSITION
04/07/2015
NPUB
NOTICE OF PUBLICATION
03/18/2015
CNSA
APPROVED FOR PUB - PRINCIPAL REGISTER
02/26/2015
DOCK
ASSIGNED TO EXAMINER
02/20/2015
ASGN
AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP
02/04/2015
NWOS
NEW APPLICATION OFFICE SUPPLIED DATA ENTERED
11/13/2014
NWAP
NEW APPLICATION ENTERED
11/04/2014
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