Intellectual Property (IP) is an important form of intangible property protected under Thai law. Intellectual property may include trademarks, copyrighted works, inventions, product designs, and confidential business information.
For businesses, intellectual property can be one of their most valuable assets. A company's brand name, logo, software, technology, product design, recipes, marketing materials, and confidential business information may have substantial commercial value.
Thai intellectual property law provides different forms of protection depending on the type of intellectual property involved. The principal laws include:
- 01Trademark Act B.E. 2534 (1991), as amended
- 02Copyright Act B.E. 2537 (1994), as amended
- 03Patent Act B.E. 2522 (1979), as amended
- 04Trade Secret Act B.E. 2545 (2002), as amended
Each type of intellectual property has different requirements for protection, different rights for the owner, and different remedies when infringement occurs.
For a practical guide to the registration process — including filing with the Department of Intellectual Property, required documents, and common filing problems — see our guide on intellectual property registration in Thailand.
1. Trademark Law in Thailand
Legal Principle
A trademark is a sign used to distinguish the goods or services of one business from those of another.
Examples include:
- Brand names
- Logos
- Symbols
- Product names
- Service marks
- Other distinctive signs
The principal legislation governing trademarks in Thailand is the Trademark Act B.E. 2534 (1991), as amended.
Relevant Legal Sections
Section 4 contains important statutory definitions, including the meaning of "mark" and "trademark."
Section 6 establishes the requirements concerning marks that may be registered under Thai law.
Section 44 is particularly important because it concerns the exclusive rights of the registered trademark owner.
Sections 108–110 contain criminal provisions concerning trademark counterfeiting, imitation, and related offences.
Businesses should therefore consider trademark registration at an early stage, particularly before investing heavily in branding and marketing.
Example
Company A registers the trademark "ABC" for a particular category of goods.
Company B subsequently uses a mark that is identical or sufficiently similar in a manner that may constitute trademark infringement.
Company A may be able to take legal action to protect its trademark rights, depending on the circumstances and the specific conduct involved.
Rights of the Trademark Owner
A registered trademark owner generally has exclusive rights to use the registered mark within the scope protected by Thai law.
The owner may also take legal action against unauthorized use where the requirements for infringement are satisfied.
Trademark registration is therefore an important part of protecting a business brand in Thailand.
What Should You Do If Your Trademark Is Infringed?
A trademark owner should consider the following steps:
- 01Verify the trademark registration.
- 02Collect evidence of the unauthorized use.
- 03Preserve photographs, product packaging, websites, and social media evidence.
- 04Determine whether the conduct constitutes trademark infringement.
- 05Consider sending a Cease and Desist Letter.
- 06Attempt negotiation or settlement where appropriate.
- 07Commence legal proceedings if necessary.
Penalties and Damages
Trademark infringement and trademark counterfeiting may result in criminal liability under the Trademark Act.
The applicable penalty depends on the specific offence and circumstances. Certain offences may carry imprisonment, fines, or both.
The trademark owner may also have civil remedies, including a claim for damages where the legal requirements are satisfied.
The amount of damages must be assessed based on the facts and evidence of each case.
2. Copyright Law in Thailand
Legal Principle
Copyright protects original creative works recognized under Thai law.
Examples include:
- Literary works
- Artistic works
- Musical works
- Films
- Sound recordings
- Computer programs
- Advertising materials
- Other protected creative works
The principal legislation is the Copyright Act B.E. 2537 (1994), as amended, including amendments introduced by the Copyright Act (No. 5) B.E. 2565 (2022).
Relevant Legal Sections
Section 4 contains important definitions, including "copyright" and "author."
Section 6 identifies categories of works protected by copyright.
Section 15 provides important rights of the copyright owner, including rights relating to reproduction, adaptation, communication to the public, and authorization for others to exercise certain rights.
Section 27 concerns copyright infringement involving acts carried out without authorization.
Example
A company hires a graphic designer to create advertising materials.
A competitor subsequently copies the materials and uses them on its own website and social media without permission.
The legal issue is not simply whether the competitor copied the work. It may also be necessary to determine:
- Who owns the copyright?
- What does the agreement between the company and designer provide?
- Was the work created under employment or commissioned?
- What rights were transferred or licensed?
- How was the work used by the competitor?
These issues can significantly affect the legal analysis.
Rights of the Copyright Owner
Depending on the circumstances and type of work, the copyright owner may have exclusive rights concerning reproduction, adaptation, communication to the public, and authorization of others to use the work.
Copyright owners should also maintain evidence establishing ownership and creation of the work.
What Should You Do If Your Copyright Is Infringed?
The copyright owner should preserve evidence such as:
- Original files
- Creation dates
- Drafts
- Metadata
- Published versions
- Website URLs
- Screenshots
- Social media posts
- Contracts with designers or creators
- Evidence showing unauthorized use
The owner may then consider sending a cease and desist notice, negotiating with the infringer, requesting removal of the infringing material, or commencing legal proceedings.
Penalties and Damages
Copyright infringement may result in both civil and criminal liability depending on the nature of the infringement.
The applicable penalties depend on the specific conduct and the relevant provisions of the Copyright Act.
A copyright owner may also seek civil remedies and damages where the legal requirements are satisfied.
3. Patent Law in Thailand
Legal Principle
A patent provides legal protection for inventions or product designs that satisfy the requirements established under Thai law.
The principal legislation is the Patent Act B.E. 2522 (1979), as amended.
Patent protection may be particularly important for businesses developing:
- New technologies
- Machinery
- Industrial products
- Manufacturing processes
- Technical innovations
- Product designs
Relevant Legal Sections
Section 5 establishes important requirements concerning inventions eligible for patent protection.
Section 6 addresses circumstances relevant to whether an invention is considered new.
Section 9 identifies certain inventions that are excluded from patent protection.
Section 36 is a key provision concerning the rights of a patent owner.
Example
Company A develops a new industrial technology and obtains a patent in Thailand.
Company B subsequently manufactures and sells products using the patented technology without authorization.
Company A should first determine:
- Whether the patent remains valid;
- The scope of the patent;
- The claims covered by the patent;
- Whether Company B's product falls within those claims; and
- Whether the conduct constitutes patent infringement.
Rights of the Patent Owner
A patent owner has rights recognized under the Patent Act concerning the exploitation of the patented invention or design.
The precise scope of those rights depends on the type of patent and the scope of protection granted.
Patent owners should therefore carefully review the patent claims before asserting infringement.
What Should You Do If a Patent Is Infringed?
The patent owner should collect and review:
- 01The patent certificate.
- 02The filing and grant dates.
- 03The current legal status of the patent.
- 04The scope of protection.
- 05The allegedly infringing product or process.
- 06Evidence of commercial use.
- 07Evidence of financial loss.
Depending on the circumstances, the owner may consider negotiation, licensing, or legal proceedings.
Penalties and Damages
Patent infringement may result in legal liability under the Patent Act.
The applicable consequences depend on the type of patent, the scope of the patent rights, and the nature of the infringing conduct.
Any claim for damages should be supported by appropriate evidence demonstrating the loss suffered by the patent owner.
4. Trade Secret Law in Thailand
Legal Principle
A trade secret generally concerns commercial or technical information that has commercial value because it is secret and is subject to appropriate measures to maintain its secrecy.
Examples may include:
- Product formulas
- Recipes
- Manufacturing processes
- Customer databases
- Business strategies
- Technical information
- Marketing strategies
- Proprietary business information
The principal legislation is the Trade Secret Act B.E. 2545 (2002), as amended.
Relevant Legal Sections
Section 3 contains important definitions, including the meaning of "trade secret."
Section 5 concerns rights relating to trade secrets.
Section 6 addresses conduct that may constitute infringement of trade secrets.
Section 8 provides certain circumstances in which conduct may not constitute infringement.
Section 13 concerns legal measures relating to infringement.
Example
A restaurant develops a unique recipe that is not publicly disclosed.
The restaurant requires employees with access to the recipe to sign confidentiality agreements and restricts access to the recipe.
An employee subsequently provides the recipe to a competing restaurant.
The legal analysis may require consideration of whether the information qualifies as a trade secret and whether the employee's conduct constitutes an infringement under Thai law.
Rights of the Trade Secret Owner
The owner or controller of a trade secret may have legal rights to prevent unauthorized disclosure, acquisition, or use of the confidential information.
However, maintaining confidentiality is critical.
Businesses should implement appropriate protective measures, such as:
- Non-Disclosure Agreements (NDAs)
- Confidentiality clauses
- Access restrictions
- Password protection
- Internal confidentiality policies
- Employee agreements
- Data classification systems
- Confidentiality obligations imposed on business partners
What Should You Do If a Trade Secret Is Misappropriated?
The business should preserve evidence showing:
- What information constitutes the alleged trade secret;
- Who had access to the information;
- How the information was protected;
- Whether an NDA existed;
- Who obtained or disclosed the information;
- How the information was used or disclosed; and
- What financial or commercial damage resulted.
These facts can be critical in establishing that the information qualifies as a protected trade secret and that an unlawful act occurred.
Penalties and Damages
Thai trade secret law provides civil remedies and criminal penalties for certain forms of unlawful disclosure or use.
For example, Section 33 provides penalties for certain intentional disclosure of another person's trade secret in circumstances specified by law.
The applicable penalty depends on the specific conduct and statutory requirements.
5. What Should You Do If Your Intellectual Property Is Infringed?
Whether the issue involves a trademark, copyright, patent, or trade secret, the owner should avoid taking action without first assessing the legal position and available evidence.
Step 1: Identify the Owner of the IP Rights
Review:
- Registration documents
- Contracts
- Assignment agreements
- Employment agreements
- Commissioning agreements
- Evidence of creation
Step 2: Preserve Evidence
Evidence may include:
- Photographs
- Screenshots
- Website URLs
- Product samples
- Advertisements
- Social media posts
- Contracts
- Emails
- Original files
- Sales records
Evidence should be preserved as soon as possible.
Step 3: Assess Whether Infringement Has Occurred
Similarity alone does not necessarily establish infringement.
The legal test depends on the type of intellectual property involved and the specific provisions of the applicable law.
Step 4: Send a Cease and Desist Letter
Where appropriate, the IP owner may send a formal notice demanding that the infringing conduct cease.
A properly prepared letter may also request:
- Removal of infringing materials;
- Destruction or surrender of infringing goods;
- Disclosure of relevant information;
- Compensation;
- An undertaking not to repeat the infringement.
Step 5: Negotiate or Settle
Some IP disputes can be resolved through negotiation, licensing, settlement agreements, or other alternative dispute resolution mechanisms.
Step 6: Commence Legal Proceedings
If the dispute cannot be resolved, the IP owner may consider civil litigation, criminal proceedings, administrative measures, or other legal remedies available under the applicable legislation.
The appropriate procedure depends on the type of intellectual property and the facts of the case.
6. Damages for Intellectual Property Infringement
There is no single fixed amount of damages applicable to every intellectual property infringement case in Thailand.
The amount of damages depends on the circumstances and evidence of each case.
Relevant considerations may include:
- Actual financial loss
- Lost sales
- Profits obtained by the infringer
- Duration of the infringement
- Scale of the infringement
- Impact on the business
- Damage to reputation
- Commercial consequences
- Nature and seriousness of the infringement
- Conduct of the parties
Businesses should therefore preserve financial and commercial records from the beginning of a dispute.
Examples include:
- Sales records
- Accounting records
- Advertising expenses
- Licensing fees
- Market data
- Evidence of lost customers
- Evidence of lost revenue
Such evidence may be important when establishing the amount of damages claimed.
7. Why Should Businesses Have an Intellectual Property Strategy?
IP protection should not begin only after an infringement has occurred.
Businesses should consider intellectual property protection when establishing or expanding their business.
Before Launching a New Brand
- Conduct a trademark search
- Assess potential conflicts
- Register the trademark
Before Disclosing New Technology
- Conduct an IP assessment
- Consider patent protection
- Determine whether information should remain confidential
Before Giving Employees Access to Confidential Information
- Classify confidential information
- Use NDAs
- Restrict access
- Establish internal confidentiality policies
Before Hiring a Designer or Developer
- Clearly identify ownership of IP rights
- Specify rights in the contract
- Address copyright and licensing
- Require delivery of source files where appropriate
A well-designed Intellectual Property Strategy can help prevent disputes and protect the commercial value of a business.
Conclusion
Intellectual property is an important business asset in Thailand.
The four major areas discussed in this article are:
- Trademark – protects distinctive signs used to identify goods and services.
- Copyright – protects qualifying creative works.
- Patent – protects qualifying inventions and product designs.
- Trade Secret – protects valuable confidential commercial or technical information that is maintained as secret.
When intellectual property infringement occurs, the owner should promptly verify ownership, preserve evidence, assess the infringement, and select an appropriate legal remedy.
Depending on the circumstances, available options may include a Cease and Desist Letter, negotiation, licensing, settlement, civil litigation, criminal proceedings, or other legal measures.
For businesses operating in Thailand, intellectual property protection should be considered as part of the overall business strategy rather than only after a dispute has arisen.
Intellectual Property Lawyer in Thailand
Nathee Legal Firm provides legal services relating to intellectual property in Thailand, including legal advice concerning:
- Trademark registration and disputes
- Copyright protection and infringement
- Patent matters
- Trade secret protection
- Non-Disclosure Agreements (NDAs)
- Intellectual property licensing
- IP-related commercial contracts
- Intellectual property infringement disputes
- Civil and criminal IP proceedings
Foreign individuals and businesses operating in Thailand should obtain legal advice before using, licensing, transferring, or enforcing intellectual property rights, particularly where the IP is connected to multiple countries.