| Serial Number | 99444768 |
| Word Mark | ELYBRIO |
| Filing Date | Wednesday, October 15, 2025 |
| Status | 802 - REQUEST FOR EXTENSION OF TIME TO FILE OPPOSITION |
| Status Date | Friday, February 6, 2026 |
| Registration Number | 0000000 |
| Registration Date | NOT AVAILABLE |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, January 20, 2026 |
| Goods and Services | Pharmaceutical preparations for the treatment of endocrine, metabolic, and hormonal related diseases and disorders |
| International Class | 005 - Pharmaceutical and veterinary preparations; sanitary preparations for medical purposes; dietetic substances adapted for medical use, food for babies; plasters, materials for dressings; material for stopping teeth, dental wax; disinfectants; preparations for destroying vermin; fungicides, herbicides. |
| US Class Codes | 005, 006, 018, 044, 046, 051, 052 |
| Class Status Code | 6 - Active |
| Class Status Date | Wednesday, October 15, 2025 |
| Primary Code | 005 |
| First Use Anywhere Date | NOT AVAILABLE |
| First Use In Commerce Date | NOT AVAILABLE |
| Party Name | Amylyx Pharmaceuticals, Inc. |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 03 - Corporation |
| Address | Cambridge, MA 02142 US |
| Party Name | Amylyx Pharmaceuticals, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Cambridge, MA 02141 US |
| Event Date | Event Description |
| Wednesday, October 15, 2025 | NEW APPLICATION ENTERED |
| Wednesday, October 15, 2025 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Wednesday, October 15, 2025 | APPLICATION FILING RECEIPT MAILED |
| Friday, December 19, 2025 | ASSIGNED TO EXAMINER |
| Friday, December 19, 2025 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, January 14, 2026 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Tuesday, January 20, 2026 | PUBLISHED FOR OPPOSITION |
| Tuesday, January 20, 2026 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Friday, February 6, 2026 | EXTENSION OF TIME TO OPPOSE RECEIVED |
| Monday, February 23, 2026 | TEAS CHANGE OF OWNER ADDRESS RECEIVED |
| Monday, February 23, 2026 | APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED |
| Monday, February 23, 2026 | TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED |
| Monday, February 23, 2026 | ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED |
| Monday, February 23, 2026 | TEAS CHANGE OF CORRESPONDENCE RECEIVED |