Language
Whether you're protecting your existing rights from a conflicting new application, or defending your own accepted mark, our team at Brealant guides you through the DIP opposition process from start to finish.
Legal Definition of Trademark Opposition
Opposition is the formal process, under the Trademark Act B.E. 2534 (1991, as amended), that lets a third party challenge a trademark application after it has been accepted and published, but before registration.
Purpose and Function of Opposition
It exists to let earlier rights holders and other affected parties prevent a confusingly similar mark from reaching the register, before it can cause consumer confusion.
Protecting Your Position
Whether opposing or defending, a carefully built case — backed by the right evidence — is essential to a successful outcome before the Trademark Board.
.svg)
Contact
Reach out to Brealant to discuss the accepted mark you want to oppose, or the opposition you need to defend.
.svg)
Search
We review the conflicting application or your own registration and the surrounding evidence.
.svg)
Quote
Receive a staged service quote covering each phase of the opposition process.
.svg)
Pay
Proceed with secure payment for the stage you're instructing us on.
File
Brealant files the Notice of Opposition, grounds, or counter-statement, as relevant.
.svg)
Wait
Await DIP's and the Trademark Board's process through each evidence stage; timing varies by case.
.svg)
Response
Receive the outcome — a Trademark Board decision, or a negotiated resolution.
In Thailand, opposition follows a defined sequence: Notice of Opposition, the applicant's counter-statement, then evidence from both sides, before the Trademark Board issues a decision. Knowing exactly where a case sits in that sequence is the clearest way to plan next steps.
Opposition is a serious step with real cost implications, so it's worth a clear-eyed assessment of the conflicting mark, the strength of your rights, and the commercial risk of letting it proceed unopposed. Brealant assesses the merits with you before recommending action.
Opposition is powerful, but it has real limits
Missed Deadlines
A Notice of Opposition must generally be filed within 60 days of publication — miss it, and the right is generally lost.
No Retrospective Effect
Opposition can't undo a mark that has already registered; a cancellation or invalidation action would be needed instead.
Cost and Time
A fully contested opposition can take a year or more and involve significant professional costs.
Burden of Proof
The opponent must prove its grounds — an opposition without solid evidence is unlikely to succeed.
Partial Outcomes
Opposition may only succeed for some of the contested goods or services, not necessarily all of them.
Brealant gives you a realistic view of the likely outcome, timeline, and cost before you proceed.
A well-run opposition protects a range of commercial and legal interests
Your Existing Brand
Preventing a confusingly similar mark from registering alongside yours.
Consumer Trust
Reducing the risk of customers being misled between your brand and a new entrant.
Market Position
Stopping a competitor from gaining registered rights that could restrict your own future use.
Register Integrity
Ensuring only marks that genuinely meet the legal requirements proceed to registration.
Brealant helps you weigh these interests against the cost and time of a contested opposition before you commit.
Opposition follows a defined, multi-stage process
.svg)
Notice of Opposition
Filed within 60 days of the mark's publication by DIP.
.svg)
Counter-Statement
The applicant generally has a set period to file a counter-statement defending the application.
.svg)
Evidence Stages
Both sides file supporting evidence and submissions in sequence before the Trademark Board.
.svg)
Board Decision
The Trademark Board decides the opposition, with a further right of appeal to the Central Intellectual Property and International Trade Court.
A fully contested opposition in Thailand commonly takes a year or more from Notice of Opposition to a Trademark Board decision, longer still if appealed to the Court.
Costs scale with how far the matter proceeds
.svg)
DIP charges an official fee to file a Notice of Opposition and at subsequent procedural stages.
Professional fees depend heavily on whether the matter proceeds to a full evidence exchange, a Board hearing, or resolves earlier.
Brealant scopes and quotes each stage separately, so you're never committed further than you choose to go.
Brealant manages your opposition matter end to end, keeping you informed at each stage and revisiting strategy as the evidence develops, so you can make informed decisions about whether to continue, negotiate, or settle.
.png)
.png)
.svg)
.svg)
Any person or business can file an opposition, though it is most often brought by the owner of an earlier conflicting mark or business name.
A Notice of Opposition must generally be filed within 60 days of the mark's publication by DIP.
Extensions of time are generally limited and must be requested from DIP before the deadline expires, so acting early is important.
If the opposition succeeds, the application is refused, in whole or for the contested goods/services, and does not proceed to registration.
Yes, many oppositions resolve through negotiation — such as a coexistence agreement or amendment — before a Trademark Board decision is needed.
Typically proof of your earlier rights, such as a prior registration or evidence of extensive use, along with grounds showing why the published mark conflicts with or is confusingly similar to yours.
You can appeal the Trademark Board's decision to the Central Intellectual Property and International Trade Court, and further to the Supreme Court in limited circumstances.
Costs depend on the complexity and whether the matter proceeds to a full Trademark Board hearing — we'll provide a clear estimate before starting work.
Yes, marks entering Thailand via an international registration are published for opposition the same way as direct national filings, on the same 60-day timeline.
Opposition challenges an application before it registers, within 60 days of publication, while cancellation challenges a mark that has already been registered, often based on years of non-use or other grounds.
Discover more insights and stay informed about the latest in intellectual property with Brealant's blog. From expert advice on trademark registration and patent protection to strategies for safeguarding your brand in a competitive market, our resources are here to empower your business. .
Explore our blog to learn how effective IP management can strengthen your brand's position and protect your innovations
.svg)
.svg){kind=icon}
Get expert guidance on your trademark, patent, copyright or design filing. Book a free 15-minute call with an IP specialist — no obligation.
Book My Free Call.avif)
.svg)
.svg)
.svg)
.png){kind=icon}
.png){kind=icon}
%20(1).jpg)
