| Serial Number | 87750270 |
| Word Mark | TENAX |
| Filing Date | Wednesday, January 10, 2018 |
| Status | 705 - PARTIAL SECTION 8 & 15 ACCEPTED AND ACKNOWLEDGED |
| Status Date | Wednesday, July 30, 2025 |
| Registration Number | 5707203 |
| Registration Date | Tuesday, March 26, 2019 |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, January 8, 2019 |
| Goods and Services | Technical advice in the field of oil and gas well drilling and hydraulic fracturing; rental of oil and gas well drilling tools and downhole tools used in oil and gas drilling and hydraulic fracturing |
| Goods and Services | [ Research and development of new products in the field of energy, specifically relating to oil and gas extraction and well drilling ] |
| International Class | 037 - Building construction; repair; installation services. |
| US Class Codes | 100, 103, 106 |
| Class Status Code | 6 - Active |
| Class Status Date | Wednesday, January 24, 2018 |
| Primary Code | 037 |
| First Use Anywhere Date | Tuesday, October 1, 2013 |
| First Use In Commerce Date | Tuesday, October 1, 2013 |
| 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 | B - Sec. 8 - Class(es) in a Multiple Class registration |
| Class Status Date | Wednesday, July 30, 2025 |
| Primary Code | 042 |
| First Use Anywhere Date | Tuesday, October 1, 2013 |
| First Use In Commerce Date | Tuesday, October 1, 2013 |
| Party Name | TENAX ENERGY SYSTEMS, LLC |
| Party Type | 31 - New Owner After Registration |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | CLINTON, OK 73601 |
| Party Name | Tenax Energy Solutions, LLC |
| Party Type | 30 - Original Registrant |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | Clinton, OK 73601 |
| Party Name | Tenax Energy Solutions, LLC |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | Clinton, OK 73601 |
| Party Name | Tenax Energy Solutions, LLC |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 16 - Limited Liability Company |
| Address | Clinton, OK 73601 |
| Event Date | Event Description |
| Friday, April 27, 2018 | NON-FINAL ACTION WRITTEN |
| Friday, April 27, 2018 | NOTIFICATION OF NON-FINAL ACTION E-MAILED |
| Saturday, January 13, 2018 | NEW APPLICATION ENTERED |
| Wednesday, January 24, 2018 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Thursday, April 19, 2018 | ASSIGNED TO EXAMINER |
| Friday, April 27, 2018 | NON-FINAL ACTION E-MAILED |
| Friday, November 30, 2018 | TEAS REQUEST FOR RECONSIDERATION RECEIVED |
| Friday, November 30, 2018 | CORRESPONDENCE RECEIVED IN LAW OFFICE |
| Friday, November 30, 2018 | TEAS/EMAIL CORRESPONDENCE ENTERED |
| Monday, December 3, 2018 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Wednesday, December 19, 2018 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Thursday, October 25, 2018 | TEAS RESPONSE TO OFFICE ACTION RECEIVED |
| Monday, November 5, 2018 | ASSIGNED TO LIE |
| Tuesday, November 6, 2018 | CORRESPONDENCE RECEIVED IN LAW OFFICE |
| Tuesday, November 6, 2018 | TEAS/EMAIL CORRESPONDENCE ENTERED |
| Tuesday, November 27, 2018 | FINAL REFUSAL WRITTEN |
| Tuesday, November 27, 2018 | FINAL REFUSAL E-MAILED |
| Tuesday, November 27, 2018 | NOTIFICATION OF FINAL REFUSAL EMAILED |
| Tuesday, March 26, 2019 | REGISTERED-PRINCIPAL REGISTER |
| Wednesday, July 30, 2025 | CASE ASSIGNED TO POST REGISTRATION PARALEGAL |
| Wednesday, July 30, 2025 | REGISTERED - PARTIAL SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. |
| Tuesday, January 8, 2019 | PUBLISHED FOR OPPOSITION |
| Tuesday, January 8, 2019 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Tuesday, March 26, 2024 | COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED |
| Wednesday, March 26, 2025 | TEAS SECTION 8 & 15 RECEIVED |
| Wednesday, July 30, 2025 | NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED |
| Wednesday, October 8, 2025 | AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP |