| Serial Number | 98273584 |
| Word Mark | C4 THERAPEUTICS |
| Filing Date | Thursday, November 16, 2023 |
| Status | 681 - PUBLICATION/ISSUE REVIEW COMPLETE |
| Status Date | Wednesday, January 7, 2026 |
| Registration Number | 0000000 |
| Registration Date | NOT AVAILABLE |
| Mark Drawing | 3 - Illustration: Drawing or design which also includes word(s) / letter(s) / number(s) |
| Published for Opposition Date | Tuesday, January 27, 2026 |
| Indication of Colors claimed | The color(s) grey, green, and blue is/are claimed as a feature of the mark. |
| NOT AVAILABLE | "THERAPEUTICS" |
| Goods and Services | pharmaceutical research and development services |
| Pseudo Mark | C FOUR THERAPEUTICS; C FOR THERAPEUTICS |
| Goods and Services | pharmaceutical preparations for the prevention and treatment of diseases and disorders, namely, cancer and tumors; pharmaceutical preparations for the treatment of immune system related diseases and disorders |
| Description of Mark | The mark consists of four rows of circles with four circles in the top and bottom rows - grey followed by three green, and one green followed by two blue in the second and third rows followed by the words C4 Therapeutics with C in green and 4 in blue and Therapeutics in grey. |
| 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 | Friday, December 22, 2023 |
| Primary Code | 005 |
| First Use Anywhere Date | NOT AVAILABLE |
| First Use In Commerce Date | NOT AVAILABLE |
| International Class | 042 - Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software. |
| US Class Codes | 100, 101 |
| Class Status Code | 6 - Active |
| Class Status Date | Friday, December 22, 2023 |
| Primary Code | 042 |
| First Use Anywhere Date | NOT AVAILABLE |
| First Use In Commerce Date | NOT AVAILABLE |
| Party Name | C4 Therapeutics, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Watertown, MA 02472 |
| Event Date | Event Description |
| Monday, November 20, 2023 | NEW APPLICATION ENTERED |
| Friday, December 22, 2023 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Saturday, December 23, 2023 | NOTICE OF DESIGN SEARCH CODE E-MAILED |
| Friday, June 21, 2024 | ASSIGNED TO EXAMINER |
| Monday, June 24, 2024 | NON-FINAL ACTION WRITTEN |
| Monday, June 24, 2024 | NON-FINAL ACTION E-MAILED |
| Monday, June 24, 2024 | NOTIFICATION OF NON-FINAL ACTION E-MAILED |
| Thursday, July 18, 2024 | APPLICATION EXTENSION TO RESPONSE PERIOD - RECEIVED |
| Thursday, July 18, 2024 | APPLICATION EXTENSION GRANTED/RECEIPT PROVIDED |
| Thursday, November 21, 2024 | TEAS CHANGE OF OWNER ADDRESS RECEIVED |
| Thursday, November 21, 2024 | APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED |
| Thursday, November 21, 2024 | TEAS CHANGE OF CORRESPONDENCE RECEIVED |
| Tuesday, December 24, 2024 | TEAS RESPONSE TO OFFICE ACTION RECEIVED |
| Tuesday, December 24, 2024 | CORRESPONDENCE RECEIVED IN LAW OFFICE |
| Tuesday, December 24, 2024 | TEAS/EMAIL CORRESPONDENCE ENTERED |
| Monday, July 14, 2025 | TEAS VOLUNTARY AMENDMENT RECEIVED |
| Monday, July 14, 2025 | PRELIMINARY/VOLUNTARY AMENDMENT - ENTERED |
| Wednesday, December 31, 2025 | APPROVED FOR PUB - PRINCIPAL REGISTER |