DEFENDER
Live / Applied — Final refusal mailed (as of 09 Mar 2026)
What this means for you
Not registered yet, but its 16 Jun 2025 filing date beats anything filed after it. If it registers, the owner can stop confusingly similar uses in the classes it covers.
Record
- Serial number
- 99236212
- Mark type
- Stylized text
- Filed
- 16 Jun 2025
- Attorney of record
- Tom P Papuga
Goods and services
- Class 009 — Scientific and electric apparatus: Downhole fluid-operated back pressure valves for connection along a fluid conduit, namely, a drill string, extending within an oil and gas well for preventing uphole conveyance of fluid and pressure along the fluid conduit; downhole fluid-operated back pressure valves for connection along a fluid conduit, namely, a stimulation fluid string, extending within an oil and gas well for preventing uphole conveyance of fluid and pressure along the fluid conduit; and downhole fluid-operated back pressure valves that are part of a drill string extending within an oil and gas well for preventing uphole conveyance of drilling fluid and pressure along the drill string
Owner
- Drilling Innovative Solutions, LLC, Lafayette, LA, US
Prosecution history
- 09 Mar 2026 — NOTIFICATION OF FINAL REFUSAL EMAILED
- 09 Mar 2026 — FINAL REFUSAL E-MAILED
- 09 Mar 2026 — FINAL REFUSAL WRITTEN
- 13 Feb 2026 — TEAS/EMAIL CORRESPONDENCE ENTERED
- 13 Feb 2026 — CORRESPONDENCE RECEIVED IN LAW OFFICE
- 13 Feb 2026 — TEAS RESPONSE TO OFFICE ACTION RECEIVED
- 13 Nov 2025 — NOTIFICATION OF NON-FINAL ACTION E-MAILED
- 13 Nov 2025 — NON-FINAL ACTION E-MAILED
- 13 Nov 2025 — NON-FINAL ACTION WRITTEN
- 13 Nov 2025 — EXAMINER'S AMENDMENT ENTERED
- 13 Nov 2025 — NOTIFICATION OF EXAMINERS AMENDMENT E-MAILED
- 13 Nov 2025 — EXAMINERS AMENDMENT E-MAILED
- 13 Nov 2025 — EXAMINERS AMENDMENT -WRITTEN
- 04 Nov 2025 — ASSIGNED TO EXAMINER
- 16 Jun 2025 — APPLICATION FILING RECEIPT MAILED