| Serial Number | 87772598 |
| Word Mark | STACK OVERFLOW |
| Filing Date | Friday, January 26, 2018 |
| Status | 702 - SECTION 8 & 15 - ACCEPTED AND ACKNOWLEDGED |
| Status Date | Thursday, October 30, 2025 |
| Registration Number | 5803103 |
| Registration Date | Tuesday, July 16, 2019 |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, April 30, 2019 |
| Goods and Services | Computer services, namely, providing customized online websites featuring user-defined information; computer services, namely, hosting a webpage for users to ask and answer questions on a variety of topics of general interest, providing search engines for obtaining information requested by users on a global computer network, providing customized computer searching of a webpage to locate specific information requested by users, creating an on-line community for registered users to participate in discussions, get feedback from their peers, form virtual communities, and engage in social networking; application service provider featuring application programming interface (API) software for use in building software applications |
| Goods and Services | Downloadable computer program allowing users within an organization to ask and answer questions on a variety of topics of general interest, to search for and obtain information requested by users, to locate specific information requested by users, to create a community within an organization for registered users to participate in discussions, to get feedback from peers within an organization, to form virtual communities, and to engage in social networking; downloadable mobile applications featuring user-defined information, allowing users to ask and answer questions on a variety of topics of general interest, providing search engines for obtaining information requested by users, providing customized searching to locate specific information requested by users, creating a community for registered users to participate in discussions, getting feedback from peers, forming virtual communities, and engaging in social networking |
| 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 | Wednesday, February 7, 2018 |
| Primary Code | 009 |
| First Use Anywhere Date | Thursday, March 31, 2016 |
| First Use In Commerce Date | Thursday, March 31, 2016 |
| 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 | Wednesday, February 7, 2018 |
| Primary Code | 042 |
| First Use Anywhere Date | Wednesday, April 16, 2008 |
| First Use In Commerce Date | Friday, January 2, 2009 |
| Party Name | Stack Exchange, Inc. |
| Party Type | 30 - Original Registrant |
| Legal Entity Type | 03 - Corporation |
| Address | New York, CO 10038 |
| Party Name | Stack Exchange, Inc. |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 03 - Corporation |
| Address | New York, NY 10038 |
| Party Name | Stack Exchange, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | New York, NY 10038 |
| Event Date | Event Description |
| Tuesday, January 30, 2018 | NEW APPLICATION ENTERED |
| Wednesday, February 7, 2018 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Tuesday, May 8, 2018 | ASSIGNED TO EXAMINER |
| Thursday, May 10, 2018 | NON-FINAL ACTION WRITTEN |
| Thursday, May 10, 2018 | NON-FINAL ACTION E-MAILED |
| Thursday, May 10, 2018 | NOTIFICATION OF NON-FINAL ACTION E-MAILED |
| Thursday, September 20, 2018 | TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED |
| Thursday, September 20, 2018 | ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED |
| Monday, October 8, 2018 | TEAS RESPONSE TO OFFICE ACTION RECEIVED |
| Monday, October 8, 2018 | CORRESPONDENCE RECEIVED IN LAW OFFICE |
| Monday, October 8, 2018 | TEAS/EMAIL CORRESPONDENCE ENTERED |
| Friday, October 26, 2018 | SUSPENSION LETTER WRITTEN |
| Friday, October 26, 2018 | LETTER OF SUSPENSION E-MAILED |
| Friday, October 26, 2018 | NOTIFICATION OF LETTER OF SUSPENSION E-MAILED |
| Tuesday, February 26, 2019 | TEAS RESPONSE TO SUSPENSION INQUIRY RECEIVED |
| Friday, March 1, 2019 | ASSIGNED TO LIE |
| Tuesday, March 5, 2019 | APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED |
| Tuesday, March 5, 2019 | CORRESPONDENCE RECEIVED IN LAW OFFICE |
| Tuesday, March 5, 2019 | TEAS/EMAIL CORRESPONDENCE ENTERED |
| Wednesday, March 20, 2019 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, April 10, 2019 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Tuesday, April 30, 2019 | PUBLISHED FOR OPPOSITION |
| Tuesday, April 30, 2019 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Tuesday, July 16, 2019 | REGISTERED-PRINCIPAL REGISTER |
| Tuesday, July 16, 2024 | COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED |
| Thursday, July 3, 2025 | TEAS SECTION 8 & 15 RECEIVED |
| Thursday, October 30, 2025 | CASE ASSIGNED TO POST REGISTRATION PARALEGAL |
| Thursday, October 30, 2025 | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. |
| Thursday, October 30, 2025 | NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED |