Loading...
Trademark Dashboard – UK Trademark Search & ClearanceUK Trademark — IPO
SIGMA
Application UK00000744544 · Registered
Quick Facts
| Application Number | UK00000744544 |
| Status | Registered |
| Owner | Merck KGaA |
| Filed | 1955-07-20 |
| Registered | 1955-07-20 |
| Renewal Due | 2034-07-20 |
| Type | Individual |
| Feature | Word |
| Attorney | See claim section below |
Is this trademark active?
Yes. SIGMA is currently a registered UK trademark, with renewal due on 2034-07-20. It is protected under UK intellectual property law and can be enforced against infringing uses.
Goods & Services
The specification below is taken directly from the filed record at the UK IPO for each Nice class this trademark is registered in.
Class 9 — Electrical & IT
Scientific, inspecting, weighing, measuring, checking (supervision) and projecting apparatus and instruments and parts of the aforesaid goods included in Class 9.CANCELLED IN RESPECT OF:Photographic cameras, photographic lenses and camera bodies.
Timeline
- Filed: 1955-07-20
- First published: 1956-09-05 (Journal 4078)
- Registered: 1955-07-20
- Renewal due: 2034-07-20
About This Trademark
'SIGMA' is a registered trademark on the UK IPO register, owned by Merck KGaA. The application (UK00000744544) was filed on 20 July 1955 and registered on 20 July 1955. The registration is set to expire on 20 July 2034.
This mark is recorded under Class 9 (scientific, electrical & IT apparatus).
The trademark is represented by Venner Shipley LLP.
Frequently Asked Questions
Who owns 'SIGMA'?
According to the UK IPO register, 'SIGMA' is owned by Merck KGaA.
Is 'SIGMA' currently a registered trademark?
Yes — 'SIGMA' is recorded as registered on the UK IPO register.
What goods or services does 'SIGMA' cover?
'SIGMA' is registered in Class 9 (scientific, electrical & IT apparatus). The filed specification reads: Class 9: Scientific, inspecting, weighing, measuring, checking (supervision) and projecting apparatus and instruments and parts of the aforesaid goods included in Class 9.CANCELLED IN RESPECT OF:Photographic cameras, photographic lenses and camera bodies.
When was 'SIGMA' first filed?
The application for 'SIGMA' was filed on 20 July 1955 and the trademark was registered on 20 July 1955.
When was 'SIGMA' first published?
The UK IPO first published / advertised 'SIGMA' on 5 September 1956.
When does 'SIGMA' need to be renewed?
The current registration of 'SIGMA' is recorded as valid until 20 July 2034, at which point it will need to be renewed to remain in force.
Attorney of Record
This trademark has an attorney of record listed on the UK register. The firm has not yet claimed its listing on Trademark Dashboard.
Cross-Register Filings
Trademarks with the same or a similar name as "SIGMA" have been found on the following foreign registers. Same-owner matches are flagged where the applicant names align across offices.
US — United States (USPTO)
| Mark | Ref | Status | Filed | Same Owner |
|---|---|---|---|---|
| EST; 2022; SALTY SISTERS; SALT (IN GREEK LETTERS WITH SALT SYMBOL IN THE MIDDLE; ALPHA, LAMBDA, ALPHA SIGMA); MATT. 5:13 (ON BIBLE) | 99681328 | 630 | 2026-03-03 | — |
| SIGMA EKKON | 99672880 | 630 | 2026-02-26 | — |
| SIGMA-PROFI GROUP | 99660246 | 630 | 2026-02-20 | — |
| SIGMA | 99658118 | 630 | 2026-02-18 | — |
| SIGMAHOVER | 99647185 | 630 | 2026-02-11 | — |
Japan — Japan (Japan Patent Office)
| Mark | Ref | Status | Filed | Same Owner |
|---|---|---|---|---|
| — | 2025362408 | 00 | 2025-10-02 | — |
| — | 2024353091 | 00 | 2024-03-21 | — |
| — | 2011350820 | 00 | 2011-01-27 | — |
| — | 2011350824 | 00 | 2011-01-27 | — |
| — | 2011350503 | 00 | 2011-01-13 | — |
Australia — Australia (IP Australia)
| Mark | Ref | Status | Filed | Same Owner |
|---|---|---|---|---|
| SIGMA STAR SAGA | 2529888 | protected | 2025-03-13 | — |
| Sigma Series | 2519961 | published | 2025-02-06 | — |
| SIGMA-ALDRICH | 2504698 | published | 2024-12-05 | Yes |
| DRIPCO SIGMA | 2497090 | protected | 2024-11-07 | — |
| SIGMAGUARD | 2420796 | lapsed | 2024-01-16 | — |
Data Source
UK trademark data is supplied by the Intellectual Property Office under the Open Government Licence v3.0.
The “About This Trademark” summary and FAQ above are AI-generated from the register data shown on this page. They are factual summaries only — always verify details against the official register before making legal decisions.