Home › Brand search › TRIDIAGONAL

Is TRIDIAGONAL trademarked in India?

7 applications advertised in the Trade Marks Journal · classes 9, 38, 42 · latest 30 June 2025

Yes, "TRIDIAGONAL" has been applied for as a trademark in India. 7 applications under this name were advertised in the Trade Marks Journal between 5 December 2022 and 30 June 2025, in class 9 (electronics and software), class 38 (telecommunications) and class 42 (software, it and design services), by Tridiagonal Software Private Limited and Tridiagonal Solutions Private Limited. Of these, 5 are logos whose text we read as "TRIDIAGONAL". The opposition windows have closed.

7 applications named TRIDIAGONAL

ApplicationClassApplicantFiledAdvertisedOpposition
6475332logo mark 38Telecommunications Tridiagonal Software Private Limited 12 June 2024 No. 221530 June 2025 closed30 October 2025
6475338logo mark 9Electronics and software Tridiagonal Solutions Private Limited 12 June 2024 No. 221423 June 2025 closed23 October 2025
6475339logo mark 38Telecommunications Tridiagonal Solutions Private Limited 12 June 2024 No. 221423 June 2025 closed23 October 2025
6475340logo mark 42Software, IT and design services Tridiagonal Solutions Private Limited 12 June 2024 No. 221423 June 2025 closed23 October 2025
5361589logo mark 42Software, IT and design services Tridiagonal Software Private Limited 8 March 2022 No. 214711 March 2024 closed11 July 2024
5392507TRIDIAGONAL 42Software, IT and design services Tridiagonal Solutions Private Limited 31 March 2022 No. 20869 January 2023 closed9 May 2023
5392506TRIDIAGONAL 9Electronics and software Tridiagonal Solutions Private Limited 31 March 2022 No. 20815 December 2022 closed5 April 2023

Goods and services claimed

Class 38: Telecommunications · application 6475332

Services for the broadcasting and transmission of data, streaming of data, providing access to databases, providing telecommunications connections to a global computer network, providing user access to global computer networks, transmission of digital files and electronic mail, computer aided transmission of messages and images

Proposed to be used · Mumbai office · full journal entry

Class 9: Electronics and software · application 6475338

Computer software, computer software applications downloadable, computer software platforms (recorded or downloadable), GPS apparatus, data processing apparatus, optical data media, apparatus and instruments for recording, transmitting, reproducing data.

Proposed to be used · Mumbai office · full journal entry

Class 38: Telecommunications · application 6475339

Services for the broadcasting and transmission of data, streaming of data, providing access to databases, providing telecommunications connections to a global computer network, providing user access to global computer networks, transmission of digital files and electronic mail, computer aided transmission of messages and images.

Proposed to be used · Mumbai office · full journal entry

Class 42: Software, IT and design services · application 6475340

Computer programming services for data processing, software engineering services for data processing, technological consultancy services for digital transformation, user authentication services using single sign-on technology for online software applications, user authentication services using technology for e-commerce transactions, software as a service [SaaS], server hosting, research in the field of artificial…

Proposed to be used · Mumbai office · full journal entry

Class 42: Software, IT and design services · application 5361589

Technological services and research and design relating thereto; design and development of computer hardware and software; software as a service [SaaS]; technological consultancy.

Proposed to be used · Mumbai office · full journal entry

Class 42: Software, IT and design services · application 5392507

Technological services and research and design relating thereto; design and development of computer hardware and software; software as a service [SaaS]; technological consultancy

Use claimed since 27/02/2015 · Mumbai office · full journal entry

Class 9: Electronics and software · application 5392506

Computer software; computer software applications, downloadable; computer software platforms, recorded or downloadable; computers

Use claimed since 27/02/2015 · Mumbai office · full journal entry

Can I use or register "TRIDIAGONAL"?

For the same or related goods, probably not. In class 9 (electronics and software), class 38 (telecommunications) and class 42 (software, it and design services), a new application for an identical or confusingly similar name is likely to be objected to by the Registry under Section 11 of the Trade Marks Act, 1999, or opposed by the earlier applicant. Closely related classes, such as class 35 (advertising, business and retail) and class 41 (education and entertainment), carry the same risk.

For unrelated goods, often yes. The same word can be registered by different owners in different classes when the goods are unrelated and the earlier mark is not well known. "TRIDIAGONAL" appears in 3 classes; the other 42 may still be open, subject to a search.

A small change rarely helps. Adding a word, changing a letter or using a logo does not avoid conflict on its own: marks are compared as a whole, by look, sound and idea.

Want a name like TRIDIAGONAL? Check yours free

Tell us your brand name and what you sell. A Trademark Attorney searches the journal register for identical and similar marks in your class and emails you a short report.

If your name is clear, we file it for you: ₹14,999 professional fee per class, one package from filing to publication in the Trade Marks Journal, plus the government fee of ₹4,500 per class for individuals and small businesses (₹9,000 for other companies). No hidden fees.

A registered Trademark Attorney reviews every report. We reply by email, usually within 24 hours.

Is TRIDIAGONAL your brand? Watch it freeWe read every weekly journal issue, logos included, and email you when a similar name is advertised, while you can still oppose it. Ask a Trademark AttorneyDoes this name affect your brand? Ask on WhatsApp. The first answer is free. Which class is mine?Describe your business and get the classes to file in, with the traps for your trade.

Similar names in the journal

Matched by spelling and containment across every issue since August 2021. Our free report and Brand Watch also check sounds-alike names.

Questions about TRIDIAGONAL

Is TRIDIAGONAL a registered trademark?

TRIDIAGONAL has been applied for and advertised in the Trade Marks Journal (7 applications, latest on 30 June 2025). Advertisement means the Registry accepted the application; it is registered only if no opposition succeeds within four months of the journal date. The journal does not record the later outcome, so check the live register before relying on it.

Who applied for the TRIDIAGONAL trademark?

As advertised: Tridiagonal Software Private Limited; Tridiagonal Solutions Private Limited.

Can I register a trademark similar to TRIDIAGONAL?

Not for the same or related goods in class 9, class 38, class 42: a confusingly similar name is likely to be refused or opposed. For unrelated goods it may be possible after a search. Ask for a free availability report before you file.

What does "advertised" mean? Read trademark status meanings, how long registration takes and how to run a trademark search.

Source and limits. Built from the Trade Marks Journal published by the Registrar of Trade Marks (a public record), issues from August 2021 onwards, as advertised and subject to transcription errors. The journal shows that an application was accepted and advertised; it does not show what happened afterwards (registration, opposition, withdrawal or abandonment), applications not yet advertised, or marks advertised before August 2021, so this is not the live register status. Applicants may ask for a correction or removal by writing to mehak@trademarkindia.pro. Information only, not legal advice and not a solicitation.

WhatsApp us