TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
12/09/2025
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Official data from USPTO
X4 PHARMACEUTICALS
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Active USPTO registrationType: CombinedOffice: 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
26
Latest update
12/11/2025
Trademark type
Combined
Nice classes
44
Filing date
07/26/2021
Registration date
09/13/2022
Expiration date
-
Complete case details
Structured fields from the responsible authority and the official record.
Status date
09/13/2022
Last transaction
12/11/2025
Responsible office
United States Patent and Trademark Office
Status code
700
Official register
Principal Register
First use anywhere
2015-12-00
First use in commerce
2015-12-00
Drawing code
3
Owner type
03
Owner location
Cambridge, MA
Examiner
MIZELLE HOWARD,DEZMONA JULYE
Law office
M10
Current location
PUBLICATION AND ISSUE SECTION
Mark description
The mark consists of the letter X to the left of the numeral 4 and directly above the word PHARMACEUTICALS, with a solid sphere above the vertical bar in the numeral 4.
Holders and representatives
Holders
X4 Pharmaceuticals, Inc.
Representatives
Karen K. Won Mintz, Levin, Cohn, Ferris, Glovsky, and Popeo P.C.
Technical classification
Nice Classes
Class 44
Vienna Codes
No Vienna codes available.
Goods and services
Class 44
providing information in the field of the treatment of cancersrare diseasesprimary immune disorders and other diseases; genetic testing for medical purposes; genetic testing for scientific research purposes
Publications
History of USPTO decisions and trademark events.
26 publications found
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
12/09/2025
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
12/09/2025
CHAN
APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
12/09/2025
COAR
TEAS CHANGE OF OWNER ADDRESS RECEIVED
12/09/2025
EWAF
TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
10/21/2025
TCCA
TEAS CHANGE OF CORRESPONDENCE RECEIVED
10/21/2025
ARAA
ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
10/21/2025
REAP
TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
10/21/2025
NRCC
NOTICE OF REGISTRATION CONFIRMATION EMAILED
09/13/2022
R.PR
REGISTERED-PRINCIPAL REGISTER
09/13/2022
NPUB
OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED
06/28/2022
PUBO
PUBLISHED FOR OPPOSITION
06/28/2022
NONP
NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED
06/08/2022
ALIE
ASSIGNED TO LIE
05/20/2022
CNSA
APPROVED FOR PUB - PRINCIPAL REGISTER
05/18/2022
TEME
TEAS/EMAIL CORRESPONDENCE ENTERED
05/18/2022
CRFA
CORRESPONDENCE RECEIVED IN LAW OFFICE
05/18/2022
TROA
TEAS RESPONSE TO OFFICE ACTION RECEIVED
05/18/2022
GNRN
NOTIFICATION OF NON-FINAL ACTION E-MAILED
04/29/2022
GNRT
NON-FINAL ACTION E-MAILED
04/29/2022
CNRT
NON-FINAL ACTION WRITTEN
04/29/2022
DOCK
ASSIGNED TO EXAMINER
04/20/2022
MDSM
NOTICE OF DESIGN SEARCH CODE E-MAILED
09/25/2021
NWOS
NEW APPLICATION OFFICE SUPPLIED DATA ENTERED
09/24/2021
NWAP
NEW APPLICATION ENTERED
07/29/2021
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