If you suspect your patent, trademark, or copyright has been infringed, start by identifying which right is actually involved, then run a preliminary assessment of whether that right is still in force and actually covers what you've found, while preserving evidence systematically from the outset. This page is a broad overview of the enforcement process, not a detailed litigation guide — for the specific procedures for patents, trademarks, or copyright, and for the available legal routes, consult a qualified professional about your specific case.
This page and the articles in this section provide general information for educational purposes only, not legal advice for any specific case. Similarity does not automatically mean infringement, and owning a registered right does not automatically mean every similar use by someone else infringes it. Every case turns on its own facts. Consult a qualified IP professional to assess your specific case before taking any action.
What IP enforcement means
IP enforcement is what a patent, trademark, or copyright owner does after finding that someone else is using their right without authorization — from an initial assessment of the situation, through evidence preservation and communicating with the suspected party, to considering the available legal routes when necessary. Each step has points that deserve careful thought, because acting in haste or without full information can create risk that isn't necessary.
First, identify which right is actually involved
Patents, trademarks, and copyright are different types of rights, governed by different Acts, with different conditions for how the right arises and different scope of protection. What looks "similar" at first glance may not involve the type of right you initially assumed — for example, a product's appearance may relate more to a design patent than an invention patent, or a similar brand name may relate more to trademark than copyright. Correctly identifying the right involved from the start makes every following step more targeted and effective.
Run a preliminary assessment before acting
Before contacting the suspected party or taking any further step, run a preliminary assessment of key questions: is your right still in force (e.g., the patent hasn't expired, the trademark hasn't been cancelled)? Does its scope of protection actually cover what you've found? And do you own the right or otherwise have standing to act? This assessment should be done carefully — accusing someone of infringement before it's clearly assessed can create unnecessary legal and business-relationship risk.
Preserve evidence systematically, early
Evidence with a clear date, gathered systematically from an early stage, matters regardless of which route you eventually take. Waiting to gather evidence later risks losing some of it, or having it carry less weight. See Evidence Preservation for IP Disputes for a full walkthrough.
Communicating with the suspected party
Once you've run a preliminary assessment and preserved evidence, many rights holders consider a formal communication with the suspected party before anything else — for example, a Cease and Desist letter. This is not a mandatory step in every case, and it is not a court order or proof that infringement actually occurred. See Cease & Desist Letters for IP Infringement for more detail.
Available routes when necessary
If initial communication doesn't resolve the matter, Thai law provides several routes for IP infringement cases — administrative, civil, and criminal. Each route has different conditions, procedures, and outcomes, and which is appropriate depends on the specific facts of the case. See Administrative, Civil & Criminal Enforcement Routes for an overview of all 3 — consult a qualified IP professional to assess the options that fit your specific case.
Why professional consultation matters
Assessing whether infringement has actually occurred requires both a detailed understanding of the scope of your own right and specialized legal expertise. Every case's outcome depends on its own facts and evidence — there is no one-size-fits-all answer. Consulting a professional from the first step helps you assess the situation more accurately and reduces the risk of acting without full information.
How patent, trademark, and copyright infringement relate to each other
Although patents, trademarks, and copyright are different types of rights under different Acts, the basic enforcement framework is similar across all three: identify the right, run a preliminary assessment, preserve evidence, then consider communication or further action in that order. In some cases, a single product can involve more than one right at once — for example, a counterfeit product that infringes a design patent while also carrying a fake trademark. Cases like this make it even more important to assess each right separately. See the type-specific steps in Patent Infringement: First Steps, Trademark Infringement: First Steps, and Copyright Infringement: First Steps.
