X4 PHARMACEUTICALS
Live / Registered — Registered (as of 12 Oct 2021)
What this means for you
Registered since 12 Oct 2021. The owner can stop confusingly similar uses in the classes it covers.
Record
- Serial number
- 88516686
- Registration number
- 6521317
- Mark type
- Design + words
- Filed
- 16 Jul 2019
- Published for opposition
- 26 Nov 2019
- Registered
- 12 Oct 2021
- Attorney of record
- Karen K. Won
Goods and services
- Class 005 — Pharmaceuticals: Pharmaceutical preparations for the treatment of cancers, rare diseases, primary immune disorders and other diseases
- Class 042 — Scientific and technological services: Research and development in the pharmaceutical field; scientific research; scientific investigations for medical purposes
Owner
- X4 Pharmaceuticals, Inc., Cambridge, MA, US
- X4 Pharmaceuticals, Inc., Cambridge, MA, US
- X4 Pharmaceuticals, Inc., Cambridge, MA, US
Prosecution history
- 09 Dec 2025 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 09 Dec 2025 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 09 Dec 2025 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 09 Dec 2025 — APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
- 09 Dec 2025 — TEAS CHANGE OF OWNER ADDRESS RECEIVED
- 21 Oct 2025 — TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
- 21 Oct 2025 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 21 Oct 2025 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 21 Oct 2025 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 12 Oct 2021 — REGISTERED-PRINCIPAL REGISTER
- 08 Sept 2021 — NOTICE OF ACCEPTANCE OF STATEMENT OF USE E-MAILED
- 07 Sept 2021 — ALLOWED PRINCIPAL REGISTER - SOU ACCEPTED
- 20 Aug 2021 — NOTICE OF APPROVAL OF EXTENSION REQUEST E-MAILED
- 19 Aug 2021 — STATEMENT OF USE PROCESSING COMPLETE
- 04 Aug 2021 — USE AMENDMENT FILED