KORSA Trademark
Trademark Overview
On Wednesday, December 18, 2024, a trademark application was filed for KORSA with the United States Patent and Trademark Office. The USPTO has given the KORSA trademark a serial number of 98909630. The federal status of this trademark filing is REQUEST FOR EXTENSION OF TIME TO FILE OPPOSITION as of Wednesday, August 13, 2025. This trademark is owned by Korsa Biosciences, Inc.. The KORSA trademark is filed in the Pharmaceutical Products category with the following description:
Antibodies for therapeutic purposes; Pharmaceutical preparations for the treatment of neurological and neurodegenerative diseases and disorders; House mark for pharmaceuticals for the treatment of neurological and neurodegenerative diseases and disorders
General Information
| Serial Number | 98909630 |
| Word Mark | KORSA |
| Filing Date | Wednesday, December 18, 2024 |
| Status | 802 - REQUEST FOR EXTENSION OF TIME TO FILE OPPOSITION |
| Status Date | Wednesday, August 13, 2025 |
| 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, July 15, 2025 |
Trademark Statements
| Goods and Services | Antibodies for therapeutic purposes; Pharmaceutical preparations for the treatment of neurological and neurodegenerative diseases and disorders; House mark for pharmaceuticals for the treatment of neurological and neurodegenerative diseases and disorders |
Classification Information
| 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, December 18, 2024 |
| Primary Code | 005 |
| First Use Anywhere Date | NOT AVAILABLE |
| First Use In Commerce Date | NOT AVAILABLE |
Trademark Owner History
| Party Name | Korsa Biosciences, Inc. |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 03 - Corporation |
| Address | Waltham, MA 02453 |
| Party Name | Korsa Biosciences, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Waltham, MA 02453 |
Trademark Events
| Event Date | Event Description |
| Wednesday, December 18, 2024 | NEW APPLICATION ENTERED |
| Thursday, June 12, 2025 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, July 9, 2025 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Tuesday, July 15, 2025 | PUBLISHED FOR OPPOSITION |
| Tuesday, July 15, 2025 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Wednesday, August 13, 2025 | EXTENSION OF TIME TO OPPOSE RECEIVED |
| Wednesday, December 18, 2024 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Wednesday, June 4, 2025 | ASSIGNED TO EXAMINER |
