| Serial Number | 86348007 |
| Word Mark | CLAYGUARD |
| Filing Date | Friday, July 25, 2014 |
| Status | 710 - CANCELLED - SECTION 8 |
| Status Date | Friday, September 19, 2025 |
| Registration Number | 4695824 |
| Registration Date | Tuesday, March 3, 2015 |
| Mark Drawing | 4 - Illustration: Drawing with word(s) / letter(s) / number(s) in Block form |
| Published for Opposition Date | Tuesday, December 16, 2014 |
| Pseudo Mark | CLAY GUARD |
| Goods and Services | Additive used to inhibit hydration and swelling of clay materials in oil and gas drilling, stimulation, or work over operations |
| International Class | 001 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry; unprocessed artificial resins; unprocessed plastics; manures; fire extinguishing compositions; tempering and soldering preparations; chemical substances for preserving foodstuffs; tanning substances; adhesives used in industry. |
| US Class Codes | 001, 005, 006, 010, 026, 046 |
| Class Status Code | 2 - Sec. 8 - Entire Registration |
| Class Status Date | Friday, September 19, 2025 |
| Primary Code | 001 |
| First Use Anywhere Date | Tuesday, August 11, 2009 |
| First Use In Commerce Date | Tuesday, August 11, 2009 |
| Party Name | THE LUBRIZOL CORPORATION |
| Party Type | 32 - New Owner After Registration |
| Legal Entity Type | 03 - Corporation |
| Address | WICKLIFFE, OH 440922298 |
| Party Name | LUBRIZOL OILFIELD SOLUTIONS, INC. |
| Party Type | 31 - New Owner After Registration |
| Legal Entity Type | 03 - Corporation |
| Address | WICKLIFFE, OH 440922298 |
| Party Name | Weatherford/Lamb, Inc. |
| Party Type | 30 - Original Registrant |
| Legal Entity Type | 03 - Corporation |
| Address | Houston, TX 77056 |
| Party Name | Weatherford/Lamb, Inc. |
| Party Type | 20 - Owner at Publication |
| Legal Entity Type | 03 - Corporation |
| Address | Houston, TX 77056 |
| Party Name | Weatherford/Lamb, Inc. |
| Party Type | 10 - Original Applicant |
| Legal Entity Type | 03 - Corporation |
| Address | Houston, TX 77056 |
| Event Date | Event Description |
| Monday, August 4, 2014 | NEW APPLICATION OFFICE SUPPLIED DATA ENTERED |
| Tuesday, August 5, 2014 | NOTICE OF PSEUDO MARK E-MAILED |
| Friday, November 7, 2014 | APPROVED FOR PUB - PRINCIPAL REGISTER |
| Tuesday, December 16, 2014 | PUBLISHED FOR OPPOSITION |
| Tuesday, July 29, 2014 | NEW APPLICATION ENTERED |
| Friday, November 7, 2014 | ASSIGNED TO EXAMINER |
| Wednesday, November 26, 2014 | NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED |
| Wednesday, November 23, 2016 | AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP |
| Tuesday, March 3, 2020 | COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED |
| Tuesday, March 2, 2021 | TEAS SECTION 8 & 15 RECEIVED |
| Monday, July 12, 2021 | REGISTERED - SEC. 8 (6-YR) ACCEPTED & SEC. 15 ACK. |
| Monday, July 12, 2021 | NOTICE OF ACCEPTANCE OF SEC. 8 & 15 - E-MAILED |
| Sunday, March 3, 2024 | COURTESY REMINDER - SEC. 8 (10-YR)/SEC. 9 E-MAILED |
| Friday, September 19, 2025 | CANCELLED SEC. 8 (10-YR)/EXPIRED SECTION 9 |
| Monday, July 12, 2021 | CASE ASSIGNED TO POST REGISTRATION PARALEGAL |
| Tuesday, December 16, 2014 | OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED |
| Tuesday, March 3, 2015 | REGISTERED-PRINCIPAL REGISTER |
| Wednesday, March 25, 2020 | AUTOMATIC UPDATE OF ASSIGNMENT OF OWNERSHIP |