OPTIFLEX
Live / Registered — Registered — Section 71 accepted (as of 17 Mar 2026)
What this means for you
Registered since 22 Nov 2005. 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 22 Nov 2035: the §71 ten-year affidavit of use).
Record
- Serial number
- 79002263
- Registration number
- 3018054
- Mark type
- Word mark
- Filed
- 04 Mar 2004
- Published for opposition
- 30 Aug 2005
- Registered
- 22 Nov 2005
- Next maintenance filing
- §71 ten-year affidavit of use, due by 22 Nov 2035 (grace period to 22 May 2036)
- Attorney of record
- Daniel M. Gurfinkel
Goods and services
- Class 009 — Scientific and electric apparatus: Level gauges [ and electric level switches ] for use in the measurement of fluids in containers, namely radar level gauges [ , capacitive level gauges, ultrasonic level gauges, capacitive level switches, and vibration level switches; flow meters for use in the field of fluid flow measurement, namely electromagnetic flow meters, ultrasonic flow meters, vortex flow meters, mass volume flow meters and suspended body flow meters ]
Owner
- KROHNE Messtechnik GmbH, Duisburg, DE
- KROHNE Meßtechnik GmbH & Co. KG, Duisburg, DE
- KROHNE Meßtechnik GmbH & Co. KG, DE
- KROHNE Meßtechnik GmbH & Co. KG, DE
Prosecution history
- 17 Mar 2026 — NOTICE OF ACCEPTANCE OF SEC. 71 - E-MAILED
- 17 Mar 2026 — REGISTERED-SEC.71 ACCEPTED
- 09 Mar 2026 — CASE ASSIGNED TO POST REGISTRATION PARALEGAL
- 19 Feb 2026 — CHANGE OF NAME/ADDRESS REC'D FROM IB
- 12 Nov 2025 — TEAS SECTION 71 RECEIVED
- 04 Apr 2024 — INTERNATIONAL REGISTRATION RENEWED
- 10 Sept 2015 — NOTICE OF ACCEPTANCE OF SEC. 71 - MAILED
- 10 Sept 2015 — REGISTERED-SEC.71 ACCEPTED
- 08 Sept 2015 — TEAS SECTION 71 RECEIVED
- 08 Sept 2015 — TEAS CHANGE OF CORRESPONDENCE RECEIVED
- 20 Mar 2014 — INTERNATIONAL REGISTRATION RENEWED
- 30 Jun 2012 — NOTICE OF ACCEPTANCE OF SEC. 71 & 15 - E-MAILED
- 30 Jun 2012 — REGISTERED - SEC. 71 ACCEPTED & SEC. 15 ACK.
- 30 Jun 2012 — REGISTERED - SEC. 71 & SEC. 15 FILED
- 30 Jun 2012 — CASE ASSIGNED TO POST REGISTRATION PARALEGAL