KEYSTONE Trademark
Trademark Overview
On Tuesday, October 21, 2025, a trademark application was filed for KEYSTONE with the United States Patent and Trademark Office. The USPTO has given the KEYSTONE trademark a serial number of 99454197. The federal status of this trademark filing is NOTICE OF ALLOWANCE - ISSUED as of Tuesday, June 2, 2026. This trademark is owned by OneKey MLS LLC. The KEYSTONE trademark is filed in the Computer & Software Services & Scientific Services category with the following description:
Software as a service (SAAS) services featuring software for real estate brokers, real estate agents, and real estate firms for purposes of database management, data analysis, project and workflow management, marketing efforts, listing management, brokerage management, single sign on access, user authentication, and for providing third-party users and clients with the ability access, compare, and save information on real estate listings; Computer services, namely, hosting an interactive web site that allows real estate brokers, real estate agents, and real estate firms for purposes of database management, data analysis, project and workflow management, marketing efforts, listing management, brokerage management, single sign on access, user authentication, and and for providing third-party users and clients with the ability access, compare, and save information on real estate listings
General Information
| Serial Number | 99454197 |
| Word Mark | KEYSTONE |
| Filing Date | Tuesday, October 21, 2025 |
| Status | 688 - NOTICE OF ALLOWANCE - ISSUED |
| Status Date | Tuesday, June 2, 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, April 7, 2026 |
Trademark Statements
| Goods and Services | Software as a service (SAAS) services featuring software for real estate brokers, real estate agents, and real estate firms for purposes of database management, data analysis, project and workflow management, marketing efforts, listing management, brokerage management, single sign on access, user authentication, and for providing third-party users and clients with the ability access, compare, and save information on real estate listings; Computer services, namely, hosting an interactive web site that allows real estate brokers, real estate agents, and real estate firms for purposes of database management, data analysis, project and workflow management, marketing efforts, listing management, brokerage management, single sign on access, user authentication, and and for providing third-party users and clients with the ability access, compare, and save information on real estate listings |
Classification Information
| 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 | Tuesday, October 21, 2025 |
| Primary Code | 042 |
| First Use Anywhere Date | NOT AVAILABLE |
| First Use In Commerce Date | NOT AVAILABLE |
Trademark Owner History
| Party Name | OneKey MLS LLC |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | West Babylon, NY 11704
US |
| Party Name | OneKey MLS LLC |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | West Babylon, NY 11704
US |
Trademark Events
| Event Date | Event Description |
| Tuesday, October 21, 2025 | NEW APPLICATION ENTERED |
| Tuesday, October 21, 2025 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Tuesday, October 21, 2025 | APPLICATION FILING RECEIPT MAILED |
| Sunday, March 8, 2026 | ASSIGNED TO EXAMINER |
| Tuesday, March 10, 2026 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, April 1, 2026 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Tuesday, April 7, 2026 | PUBLISHED FOR OPPOSITION |
| Tuesday, April 7, 2026 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Tuesday, June 2, 2026 | NOA E-MAILED - SOU REQUIRED FROM APPLICANT |
