| Serial Number | 87735500 |
| Word Mark | KEYSTONE |
| Filing Date | Wednesday, December 27, 2017 |
| Status | 701 - SECTION 8 - ACCEPTED |
| Status Date | Wednesday, June 4, 2025 |
| Registration Number | 5534740 |
| Registration Date | Tuesday, August 7, 2018 |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, May 22, 2018 |
| Goods and Services | Crash hardened memory module |
| International Class | 009 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire extinguishing apparatus. |
| US Class Codes | 021, 023, 026, 036, 038 |
| Class Status Code | 6 - Active |
| Class Status Date | Friday, January 12, 2018 |
| Primary Code | 009 |
| First Use Anywhere Date | Friday, November 10, 2017 |
| First Use In Commerce Date | Friday, November 10, 2017 |
| Party Name | Sil4 Systems, Inc. |
| Party Type | 30 - Original Registrant |
| Legal Entity Type | 03 - Corporation |
| Address | Pittsburgh, PA 15228 |
| Party Name | Sil4 Systems, Inc. |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 03 - Corporation |
| Address | Pittsburgh, PA 15228 |
| Party Name | Sil4 Systems, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Pittsburgh, PA 15228 |
| Event Date | Event Description |
| Tuesday, May 22, 2018 | PUBLISHED FOR OPPOSITION |
| Friday, January 12, 2018 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Saturday, April 7, 2018 | ASSIGNED TO EXAMINER |
| Thursday, April 19, 2018 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, May 2, 2018 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Thursday, February 6, 2025 | TEAS SECTION 8 RECEIVED |
| Wednesday, June 4, 2025 | CASE ASSIGNED TO POST REGISTRATION PARALEGAL |
| Wednesday, June 4, 2025 | REGISTERED - SEC. 8 (6-YR) ACCEPTED |
| Wednesday, June 4, 2025 | NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED |
| Tuesday, May 22, 2018 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Tuesday, August 7, 2018 | REGISTERED-PRINCIPAL REGISTER |
| Monday, August 7, 2023 | COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED |