Innovative ideas often have the potential to develop into valuable products, services, or technologies. However, without proper protection, even the most promising idea may be easily replicated by competitors. Securing patent protection is therefore an important step in safeguarding innovations and maintaining a competitive advantage in the marketplace.
In the business world, patents are widely recognized as strategic assets. Many companies, particularly startups and technology-based enterprises, highlight their patents when engaging with investors or partners. Beyond protecting innovations from imitation, patents also serve as legal proof of ownership over an invention.
While patent filing is sometimes perceived as complicated, the process can be approached systematically with the right preparation. This article outlines key points that innovators should understand when preparing to file a patent application on their own.
Note: Since patent laws differ across jurisdictions, this article primarily refers to patent filing procedures in Thailand under the Patent Act B.E. 2522 (1979).
1. Choosing the Correct Type of Patent Protection
In Thailand, patent protection is divided into two main categories: Invention and Design
Invention:
Inventions may be protected under either Invention Patent, or Petty Patent. These differ in protection term and examination criteria. An invention may include a device, product, formulation, or manufacturing process that solves a technical problem or differs technically from existing technology.
Differences Between an Invention Patent and a Petty Patent
Design:
Industrial design protection covers the the ornamental appearance or visual design of a product
Design Patent
Although all forms of protection are categorized as patents, each patent type contains specific differences in requirements and procedural details. Selecting a patent type that properly corresponds to the nature of the invention or design will maximize efficiency, reduce the likelihood of receiving Office Actions requiring amendment, and help avoid unnecessary delays in the examination process. In the worst case, an incorrect filing strategy may result in refusal of registration. Therefore, choosing the appropriate patent category that aligns with the subject matter whether an invention or an industrial design is critically important.
Furthermore, the two categories of invention-related protection: invention patents and petty patents differ in terms of protection duration, examination procedures, and substantive examination criteria. Selecting the appropriate form of protection is a key factor in ensuring that patent rights can be commercially exploited as effectively as possible. For example, if an applicant seeks rapid protection ahead of competitors and anticipates commercial use of the invention for no more than ten years perhaps because an improved next-generation version is already planned a petty patent may offer strategic advantages. Petty patents typically undergo a faster examination process and involve lower filing and prosecution costs. Conversely, where an invention requires substantial development time and financial investment such as pharmaceutical products or chemical innovations filing for an invention patent may provide greater long-term value. Although the examination period and associated costs are higher, the applicant benefits from a significantly longer term of protection and extended commercial exclusivity.
Another important consideration is that applicants may simultaneously file for protection under both invention-related categories (invention patent or petty patent) and an industrial design patent, since each protects different aspects of the same product. While invention patents protect technical features and functional innovations, design patents protect the product’s appearance. Filing in both categories can therefore provide broader and more comprehensive protection, making it an attractive strategy for safeguarding intellectual property rights.
2. Novelty — The Core Requirement of Patentability
The examination criteria for all patent applications are based on internationally recognized standards that are applied consistently across countries. The Department of Intellectual Property has adopted these principles and implemented them within Thailand’s patent examination system. The key criteria for patent examination consist of the following: Novelty, Inventive Step, and Industrial Applicability.
Novelty
Novelty is considered the core principle in patent examination. All types of patents including invention patents, petty patents, and design patents must satisfy the novelty requirement during examination before an application can proceed to registration.
To meet the novelty requirement, the essential substance of the invention or design must not have been publicly disclosed anywhere prior to the filing date. Such disclosure may include patent databases, academic publications, or even advertising through any public communication channels. Without novelty as a legal criterion, applicants could potentially seek protection for ideas or inventions that already belong to others.
A common reason many applications fail the novelty requirement is that applicants unintentionally destroy the novelty of their own inventions. In many cases, products have already been advertised or commercially sold before the patent application is filed. After receiving positive market feedback, applicants then attempt to file for patent protection. Even if the applicant is the first person in the world to create the product and no prior patent exists, public advertising or commercial distribution is legally considered public disclosure, which eliminates novelty. Therefore, filing a patent application before manufacturing, advertising, or selling the product is the most effective way to preserve novelty. Patent examiners assess novelty based on the state of knowledge up to the filing date. Any disclosure occurring after the filing date will not affect the novelty of the invention.
Another important precaution is conducting searches using reliable patent databases. In many situations, an invention that appears new may already have been previously disclosed in earlier patent filings, even if those inventions were never commercially marketed or widely known and therefore do not appear in general search engines.
Inventive Step
Inventive Step is a key criterion used to determine whether an invention qualifies for protection as an invention patent or should instead be filed as a petty patent. An invention is considered to possess an inventive step when a person skilled in the relevant technical field such as engineering, biology, or scientific disciplines would not be able to easily predict or derive the invention from existing knowledge.
Under Thai patent law, the inventive step requirement applies only to invention patents. It is not required for petty patents or industrial design patents.
Industrial Applicability
Industrial Applicability is another essential requirement applied to all types of patents, including invention patents, petty patents, and industrial design patents. Industrial applicability means that the invention or design must be capable of being used in an industrial context. For products, this requires that they can be manufactured through a production process that produces consistent and reproducible results.
For example, if the invention is a refrigerator, each unit produced must demonstrate comparable performance. Similarly, if the invention relates to food products, each production batch must maintain consistent quality and characteristics. For this reason, handmade or handcrafted products generally cannot obtain patent protection, as it is not possible to ensure uniform characteristics or performance across all produced items.
3. Prepare Complete Documentation — Submit Successfully in One Filing
For many people, preparing documents for submission to Intellectual property offices already sounds complicated. If the documents are incomplete or incorrect, officials will request revisions, causing delays and additional work. This section introduces practical techniques for organizing patent application documents clearly and systematically in order to minimize errors and repeated corrections.
To simplify understanding, the required documents can be divided into two main categories: “Patent Specification” and “Supporting Documents.” (Note: These terms are not official legal terminology but are used here for easier understanding and preparation.)
Patent Specification
These documents primarily describe the invention or design itself. The preparation format varies depending on the type of patent, as outlined below. Each type has specific drafting techniques and requirements.
Supporting Documents
In addition to the documents describing the invention or design, similar to submitting documents when dealing with other Intellectual property offices, applicants must also prepare supporting documents to present to officials in order to verify their identity. This is particularly important because once a patent is granted, the ownership rights to the work will legally belong to the applicant. Therefore, these documents play a crucial role in confirming that the applicant is the legitimate rights holder of the invention or design.
The required supporting documents differ depending on whether the applicant is an individual or a juristic person (company/entity).
Note: Applicants who are not Thai nationals are legally required to file patent applications through a licensed patent agent registered with the Department of Intellectual Property.
Application Form
The Application Form, or Form 001-A, is the official patent application form issued by the Department of Intellectual Property. Simply put, it functions like a service request form. The applicant must complete the form by providing the title of the invention, as well as the names and addresses of the applicant and the inventor/designer. The form provides space to list only one applicant and one inventor/designer. If there are multiple applicants or inventors/designers, the additional names must be specified in Form 012-K (Continuation Sheet) and submitted together with the application.
An important point to note is that the applicant (who will become the rights owner once the patent is granted) may be either an individual or a juristic person. However, the inventor/designer can only be a natural person. There is no limitation on the number of applicants or inventors/designers who may file jointly in a single application.
Statement of Right
A Statement of Right must be completed and submitted when the applicant and the inventor are the same person. This document certifies that the applicant independently created or developed the invention or design and did not appropriate another person’s invention or design for patent registration.
Assignment Agreement
An Assignment Agreement is a document that must be signed by the inventor/designer to acknowledge that the invention or design they created will be filed for patent protection and that appropriate compensation has been provided.
For example, Company A manufactures electrical appliances. One day, its product development team creates a new type of television display that is more durable and energy-efficient. Before commercial launch, the company wishes to file a petty patent with Company A as the applicant and patent owner. In this case, an assignment agreement must be prepared: the inventors (members of the development team) act as the assignors, while the authorized signatory of Company A acts as the assignee.
This mechanism ensures that inventors receive appropriate compensation and are properly recognized as the true creators of the invention or design.
Patent Application Submission Channels
In-person submission: applicants may submit all documents directly to:
1.The Patent Application Receiving Office, 3rd Floor, Department of Intellectual Property, Ministry of Commerce, Nonthaburi Province
2.Provincial Commerce Offices in all provinces throughout Thailand
Online submission:
Applications may also be filed through the Department of Intellectual Property website. First-time users must register and complete identity verification with an officer before accessing the online filing system (DIP E-Filing).
4. Examination Timeline
After all documents have been submitted to the Department of Intellectual Property, the entire examination process falls under the authority of the patent examiners. Each type of patent has different procedures and examination timelines.
Invention Patent
Petty Patent
Design Patent
5. International Patent Protection
Under international intellectual property agreements, patent protection is territorial in nature. This means that legal protection applies only in the countries where patent protection has been filed and granted. Therefore, even if a patent has been registered in Thailand, the patent owner cannot enforce their rights against infringement occurring in other countries unless protection has also been obtained there. For entrepreneurs planning to export products, establish overseas manufacturing facilities, or exhibit products abroad, extending patent protection to foreign jurisdictions is an important strategy to ensure comprehensive protection of their work.
Invention Patents and Petty Patents
When filing invention patents or petty patents abroad while claiming priority from a Thai application, there are two available routes:
1. Direct Filing (Paris Convention Route)
The applicant files directly with the intellectual property office of the target country. The application must be filed within 12 months from the filing date in Thailand.
Advantages: lower costs compared to the PCT system.
Suitable for: applicants who already know which countries they wish to seek protection in.
2.Patent Cooperation Treaty (PCT) Route
The applicant first files an international application through a central receiving office under the Patent Cooperation Treaty (PCT), and later enters the national phase in selected countries.
The PCT application must be filed within 12 months from the first filing date, but it extends the deadline for entering target countries from 12 months to up to 30 months.
Disadvantages: higher cost than direct filing.
Advantages: provides additional time to evaluate market potential, business risks, and commercialization strategy before choosing countries.
Design Patents
Currently, design patent applications first filed in Thailand can be extended abroad only through direct filing. Applications must be filed with the intellectual property office of the destination country within 6 months from the Thai filing date in order to claim priority as the same application.
Why File as the Same (Priority) Application?
Filing within the prescribed priority period allows applications submitted in multiple countries to be treated as the same original application. This ensures that the invention or design does not lose its novelty when filed internationally. For example, A files a petty patent application in Thailand. Two years later, market demand emerges in China, and A decides to file there. Since the 12-month priority period has already expired, the Chinese application must be filed as a new application. During examination, the Chinese examiner may find that the invention has already been published in Thailand, causing the application to lose novelty and potentially be rejected.
Another advantage of coordinated international filing is that, if a patent is granted abroad, examination results and grant documents from foreign jurisdictions may be submitted to Thai examiners to help support and strengthen the Thai application.
6. Using Patent Agent Services
A Patent Agent or Patent Attorney is a legally authorized professional who acts on behalf of inventors or designers in filing patent applications with the intellectual property office. In Thailand, patent agents must complete official training and pass a licensing examination administered by the Department of Intellectual Property before being registered.
To obtain a license, patent agents must possess strong knowledge of patent examination criteria, claim drafting, and patent law procedures. Many patent owners choose to use patent agents to manage their applications. Services typically include conducting patent database searches to assess patentability and registration prospects, drafting and reviewing patent applications, especially claims, to ensure clarity and strong protection, minimizing errors that may lead to office actions and delays, communicating with patent examiners on behalf of the applicant during amendment or clarification processes.
Additionally, patent agents assist in developing intellectual property strategies, advising whether an invention should be protected by a particular patent type and in which countries protection should be sought. This allows inventors and businesses to focus their time and resources on product development and business planning.
IDG provides comprehensive patent registration services through a team of experienced specialists who offer consultation and support throughout the entire process from evaluating patentability and preparing documentation to monitoring application progress. The company also offers branding, logo design, and related services to help strengthen businesses in a complete and integrated manner.
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