ENTONOX Trademark (Class 5) — Registered Status & Details
Source: Indian Trademark Registry (ipindia.gov.in) · IP India record as of 09/07/2026 · Last updated 9 Jul 2026
Trademark Fact Sheet
- Trademark (as filed)
- ENTONOXWORD
- Application No.
- 225948
- Filed
- 14/12/1964
- Status
- Registered
- Class(es)
- Class 5
- TM Office
- KOLKATA
- Owner's state
- West Bengal
- TM type
- WORD
- Valid upto
- 14/12/2026
- Published in Journal
- Published in Journal No. : 434-0 Dated : 01/07/1967
Goods & Services
ANAESTHETIC AND ANALGESIC GASES.
Owner
- Name
- THE BRITISH OXYGEN COMPANY LIMITED Body Incorporate1 trademark filed under this owner
- Address
- *****
- State
- West Bengal
Application Timeline
Uploaded Documents
46 documents filed with the Trade Marks Registry for this application.
| # | Document | Date |
|---|---|---|
| 1 | Examination Report | 23 Nov 1964 |
| 2 | Search Report | 23 Nov 1964 |
| 3 | Note Sheet | 23 Nov 1964 |
| 4 | Order | 23 Nov 1964 |
| 5 | Other Documents | 14 Dec 1964 |
| 6 | Journal Copy | 14 Dec 1964 |
| 7 | Certificate | 14 Dec 1964 |
| 8 | Additional Representation Sheet | 14 Dec 1964 |
| 9 | Correspondence | 14 Dec 1964 |
| 10 | TM-11 | 4 Jan 1968 |
| 11 | TM-12 | 15 Feb 1978 |
| 12 | Cover To Cover | 25 Jun 1989 |
| 13 | TM-33 | 29 Oct 1992 |
| 14 | TM-33 | 29 Oct 1992 |
| 15 | Cover To Cover | 22 Mar 1993 |
| 16 | TM-29 | 22 Mar 1993 |
| 17 | General Power of Attorney | 4 Feb 1998 |
| 18 | Assignment Deed | 15 Apr 1998 |
| 19 | Power of Attorney | 29 Sep 1998 |
| 20 | Covering Letter | 9 Dec 1998 |
| 21 | TM-34 | 15 Dec 1998 |
| 22 | TM-34 | 15 Dec 1998 |
| 23 | TM-33 | 15 Dec 1998 |
| 24 | TM-24 | 15 Dec 1998 |
| 25 | Other Documents | 15 Dec 1998 |
| 26 | TM-33 | 15 Dec 1998 |
| 27 | TM-33 | 15 Dec 1998 |
| 28 | TM-33 | 15 Dec 1998 |
| 29 | TM-50 | 12 Apr 2000 |
| 30 | Cover To Cover | 2 Oct 2000 |
| 31 | Examination Report | 13 Sep 2003 |
| 32 | Correspondence | 31 Mar 2005 |
| 33 | Note Sheet | 4 Jan 2007 |
| 34 | Note Sheet | 9 Feb 2009 |
| 35 | Affidavit | 12 Mar 2010 |
| 36 | Other Documents | 17 Mar 2010 |
| 37 | Covering Letter | 20 Apr 2010 |
| 38 | TM-50 | 21 Apr 2010 |
| 39 | TM-50 | 21 Apr 2010 |
| 40 | Note Sheet | 30 Aug 2010 |
| 41 | Hearing Notice | 15 Jan 2014 |
| 42 | Order | 12 Feb 2014 |
| 43 | O-3 Notice | 21 Oct 2016 |
| 44 | TM-12 | 28 Oct 2016 |
| 45 | Renewal Certificate | 13 Jan 2017 |
| 46 | TM-P(ALTER ADDRESS OF REGISTERED PROP/USER) | 14 Nov 2019 |
Correspondence and Notices
3 notices issued by the Registry on this application.
| # | Subject | Corres. No. | Date |
|---|---|---|---|
| 1 | O3 NOTICE | 4111508 | 17 Oct 2016 |
| 2 | RENEWAL NOTICE | 4335925 | 21 Dec 2016 |
| 3 | Scrutiny Report | 11968263 | 9 Aug 2021 |
Filing claims & diligence
- First use claim
- Proposed to be used
- Filing mode
- Branch Office
- Category
- TRADE MARK
What does this status mean?
ENTONOX is a registered trademark in Class 5. The owner holds exclusive rights to use this mark for ANAESTHETIC AND ANALGESIC GASES. and can renew it to keep the protection in force. Planning a similar mark in Class 5? It may be blocked — check availability before you file.
Frequently asked questions
The trademark ENTONOX (Application No. 225948) is owned by (1) THE BRITISH OXYGEN, as recorded in the Indian Trademark Registry. Trademark ownership in India is determined by the Trade Marks Act, 1999 and the Trade Marks Rules, 2017.
The current status of ENTONOX is "Registered". It was filed on 14/12/1964 at KOLKATA in Class 5. Status may change over time as the application moves through examination, publication, opposition and registration stages.
ENTONOX is filed in Class 5, covering: ANAESTHETIC AND ANALGESIC GASES.
ENTONOX covers: ANAESTHETIC AND ANALGESIC GASES.
The exact word "ENTONOX" is already on record at the Indian Trademark Registry under Application No. 225948. If you intend to use a similar mark for similar goods or services, you should conduct a comprehensive availability search and consult a trademark attorney before filing. Registerkaro offers a free availability check followed by professional filing.
ENTONOX is valid up to 14/12/2026. Indian trademarks are valid for 10 years from the date of registration and can be renewed indefinitely in 10-year blocks.
If ENTONOX is in the "Advertised before Acceptance" or "Accepted & Advertised" stage, you have a 4-month window from publication in the Trade Marks Journal to file an opposition (Form TM-O) at the same Trade Marks Registry office. Grounds typically include prior rights, descriptiveness or bad faith. Registerkaro can prepare and file a Notice of Opposition for you.
— Public Notice —
Protect a mark like "ENTONOX"
Free availability check, attorney drafting, and end-to-end TM-A filing through Registerkaro. Pick the plan that fits — government fee additional.
For individuals or companies who just want to file a trademark.
- Help choosing the right trademark class
- Drafting & Filing by TM Expert + Power of Attorney form
- Acknowledgement Receipt
- TM usage guide