ZENTEST
Live / Registered — Registered — Section 8 accepted (as of 08 Oct 2025)
What this means for you
Registered since 25 Dec 2018. The owner can stop confusingly similar uses in the classes it covers; it stays on the register as long as the owner keeps up the maintenance filings (next due by 25 Dec 2028: the §8 & §9 renewal).
Record
- Serial number
- 87715674
- Registration number
- 5639462
- Mark type
- Word mark
- Filed
- 11 Dec 2017
- Published for opposition
- 08 May 2018
- Registered
- 25 Dec 2018
- Next maintenance filing
- §8 & §9 renewal, due by 25 Dec 2028 (grace period to 25 Jun 2029)
- Attorney of record
- Michael Markos
Goods and services
- Class 009 — Scientific and electric apparatus: Scientific measuring instruments for water analysis, namely, pH meters, conductivity meters, electronic meters for measuring TDS or total dissolved solids, electronic meters for measuring salinity levels, [ electronic meters for monitoring dissolved oxygen, electronic meters for measuring chlorine levels, ISE or electronic ion-selective electrode meters for monitoring dissolved ions, electronic meters for measuring turbidity, ] electronic meters for measuring ORP or oxidation reduction potential, and non-medical thermometers, all for laboratory, environmental, and industrial scientific water analysis
Owner
- APERA INSTRUMENTS, LLC, COLUMBUS, OH
- APERA INSTRUMENTS, LLC, COLUMBUS, OH
- APERA INSTRUMENTS, LLC, COLUMBUS, OH
Prosecution history
- 20 Jan 2026 — TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
- 20 Jan 2026 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 20 Jan 2026 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 20 Jan 2026 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 08 Oct 2025 — NOTICE OF ACCEPTANCE OF SEC. 8 - E-MAILED
- 08 Oct 2025 — REGISTERED - SEC. 8 (6-YR) ACCEPTED
- 06 Oct 2025 — CASE ASSIGNED TO POST REGISTRATION PARALEGAL
- 18 Jun 2025 — TEAS SECTION 8 RECEIVED
- 25 Dec 2023 — COURTESY REMINDER - SEC. 8 (6-YR) E-MAILED
- 24 Jan 2021 — APPLICANT/CORRESPONDENCE CHANGES (NON-RESPONSIVE) ENTERED
- 24 Jan 2021 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 24 Jan 2021 — TEAS WITHDRAWAL OF ATTORNEY RECEIVED-FIRM RETAINS
- 24 Jan 2021 — ATTORNEY/DOM.REP.REVOKED AND/OR APPOINTED
- 24 Jan 2021 — TEAS REVOKE/APP/CHANGE ADDR OF ATTY/DOM REP RECEIVED
- 24 Jan 2021 — TEAS CHANGE OF OWNER ADDRESS RECEIVED