Bangladesh Patent Law Overview: A Comprehensive Legal Guide (2026)

Introduction: The Strategic Importance of Patent Protection

In the contemporary global economy, intellectual property (IP) has emerged as the cornerstone of industrial development and economic competitiveness. For a rapidly growing economy like Bangladesh, which is transitioning from a Least Developed Country (LDC) to a developing nation, the establishment of a robust intellectual property framework is not merely a legal requirement but a strategic necessity. The Bangladesh Patent Law Overview provided in this guide explores the intricate mechanisms through which the nation protects innovation, fosters creativity, and aligns itself with international legal standards.Patents are exclusive rights granted by the state to an inventor for a limited period, typically 20 years, in exchange for the public disclosure of the invention. This "social contract" ensures that inventors are rewarded for their ingenuity while the public gains access to new knowledge that can spur further technological advancements. In Bangladesh, the landscape of patent law has undergone a paradigm shift in recent years, moving away from colonial-era statutes toward modern, TRIPS-compliant legislation that addresses the complexities of the 21st-century technological environment.As businesses and inventors increasingly look toward Bangladesh as a hub for manufacturing and technological services, understanding the nuances of the Bangladesh Patent Law Overview becomes critical. Whether it is a multinational corporation seeking to protect its pharmaceutical formulations or a local startup developing a novel agricultural tool, the patent system provides the legal certainty required to invest in research and development (R&D).

The Evolution of Patent Legislation in Bangladesh

The history of patent law in Bangladesh is a journey of modernization and international alignment. For over a century, the primary legal instrument was the Patents and Designs Act, 1911. While this act served the country for decades, it eventually became inadequate in the face of rapid technological changes and the requirements of the World Trade Organization (WTO) Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS).

The Transition to the 2023 Act

To address these shortcomings, the government of Bangladesh embarked on a comprehensive legislative reform process. This led to the enactment of the Bangladesh Patent Act, 2022, which was subsequently refined and replaced by the Bangladesh Patent Act, 2023 (Act No. LIII of 2023). This new act, which officially came into force on February 27, 2025, represents a significant milestone in the country's legal history.

Feature	Patents and Designs Act, 1911	Bangladesh Patent Act, 2023
Scope	Combined Patents and Designs	Exclusive focus on Patents
Duration	16 years (extendable)	20 years (fixed from filing)
TRIPS Compliance	Partial	Full
Examination	Basic	Comprehensive Substantive Examination
International Filing	Limited	Integrated with PCT and WIPO standards

The Bangladesh Patent Act, 2023 aims to streamline the registration process, enhance the rights of patent holders, and provide clear mechanisms for enforcement and dispute resolution. It also introduces modern concepts such as utility models (in some interpretations) and more stringent criteria for patentability, ensuring that only truly innovative inventions receive protection.

Criteria for Patentability in Bangladesh

According to Section 3 of the Bangladesh Patent Act, 2023, for an invention to be eligible for patent protection, it must satisfy three fundamental criteria. These criteria are consistent with international standards and are rigorously applied by the Department of Patents, Designs and Trademarks (DPDT). Understanding these criteria is the first step in any Bangladesh Patent Law Overview.

1. Novelty (Newness)

An invention is considered novel if it does not form part of the "prior art." Prior art includes all knowledge that has been made available to the public anywhere in the world, whether by written or oral description, by use, or in any other way, before the filing date (or priority date) of the patent application. In the context of the Bangladesh Patent Law Overview, it is essential to note that Bangladesh follows a standard of "absolute novelty," meaning disclosure anywhere in the world can invalidate a patent claim. Even a demonstration at a trade fair or a mention in a research paper before filing can be fatal to the application.

2. Inventive Step (Non-Obviousness)

Even if an invention is new, it must also involve an "inventive step." This means that the invention must not be obvious to a person "skilled in the art"—someone with average knowledge and experience in the specific technical field. The inventive step ensures that patents are not granted for minor, self-evident modifications of existing products or processes. For example, simply changing the material of a known product from wood to plastic without any unexpected technical advantage would likely lack an inventive step.

3. Industrial Applicability

The third criterion is that the invention must be capable of being made or used in any kind of industry, including agriculture. If an invention is purely theoretical or cannot be physically manifested in a way that provides a practical utility, it will not qualify for a patent. This requirement excludes "perpetual motion machines" or other concepts that violate the laws of physics.

Comparative Perspective: Bangladesh vs. India and the UK

While the core criteria remain similar across jurisdictions, the interpretation of "inventive step" can vary. In the UK, the Windsurfing/Pozzoli test is often applied, whereas in India, Section 3(d) of their Patent Act adds a layer of "enhanced efficacy" for pharmaceutical derivatives. The Bangladesh Patent Act, 2023 aligns closely with the UK and European standards, focusing on technical character and non-obviousness without the specific "enhanced efficacy" clause found in Indian law, though it maintains strict exclusions for "evergreening" practices.

Exclusions from Patentability: What Cannot be Patented?

While the scope of patentable inventions is broad, the Bangladesh Patent Act, 2023 (specifically under Sections 6 and 7) explicitly excludes certain subject matters from protection. These exclusions are designed to protect public order, morality, and the public interest.

"The law ensures that fundamental scientific truths and certain biological processes remain in the public domain to prevent monopolies over essential knowledge." — TRW Law Firm

Key Exclusions Include:

• Discoveries, Scientific Theories, and Mathematical Methods: Finding something that already exists in nature or creating a mathematical formula is not considered an "invention."
• Business Methods and Rules of Games: Schemes, rules, or methods for performing mental acts or doing business are generally excluded.
• Computer Programs (Software) "As Such": While software-related inventions with a technical character may be patentable, pure code or algorithms are not.
• Methods of Treatment: Diagnostic, therapeutic, and surgical methods for the treatment of humans or animals are excluded to ensure medical professionals can practice without fear of infringement.
• Plants and Animals: Other than microorganisms, plants and animals in their natural state, and essentially biological processes for their production, are not patentable.
• Inventions Contrary to Public Order or Morality: Any invention whose commercial exploitation would be against the public interest or morality is strictly prohibited.

The Patent Registration Process: A Step-by-Step Guide

Navigating the registration process is a core component of the Bangladesh Patent Law Overview. The process is designed to be transparent but requires meticulous attention to detail and adherence to statutory timelines. The DPDT acts as the gatekeeper, ensuring that the monopoly granted by a patent is justified by the invention's contribution to the state of the art.

Phase 1: Pre-Filing Search and Analysis

Before filing an application, it is highly recommended to conduct a comprehensive patent search. This helps evaluate the novelty of the invention and reduces the risk of rejection or future litigation. The intellectual property team at TRW often assists clients in analyzing existing patents to determine the "freedom to operate." A thorough search includes not only Bangladeshi patents but also international databases like WIPO's PATENTSCOPE and the EPO's Espacenet.

Phase 2: Filing the Application - Provisional vs. Complete

An applicant can choose to file a Provisional Specification first. This is useful when the invention is still in the development stage but the inventor wants to secure a priority date. A Complete Specification must then be filed within 12 months. If the invention is fully developed, the applicant can file the Complete Specification directly.Key documents for filing include:
1. Form 1: The formal application for the grant of a patent.
2. Complete Specification: A detailed description of the invention, including how it works and how it can be reproduced. It must disclose the invention in a manner sufficiently clear and complete for it to be carried out by a person skilled in the art.
3. Claims: The most critical part of the document, defining the legal boundaries of the protection sought. Each claim must be clear, concise, and supported by the description.
4. Drawings: Technical illustrations, where necessary, to explain the invention.
5. Abstract: A brief summary of the technical disclosure.

Phase 3: Publication

After filing, the application is typically kept confidential for a period of 18 months, after which it is published in the Official Gazette. This publication alerts the public to the pending patent and allows for transparency in the system. Early publication can be requested if the applicant wishes to accelerate the process.

Phase 4: Substantive Examination

Unlike the previous system, the 2023 Act requires a formal Request for Examination. Under Section 19, this request must be filed within 36 months from the date of filing the application. Failure to do so will result in the application being deemed withdrawn. The examiner then reviews the application against the criteria of novelty, inventive step, and industrial applicability. The examiner may issue an Office Action (Examination Report) raising objections, to which the applicant must respond within a set timeframe.

Phase 5: Opposition

Once the application is accepted and published for opposition, any interested person can file an opposition within 6 months. Grounds for opposition may include:
* The applicant wrongfully obtained the invention from the true inventor.
* The invention was published or publicly used in Bangladesh before the priority date.
* The invention lacks novelty or an inventive step.
* The subject matter is not patentable under the Act.

Phase 6: Grant of Patent

If there is no opposition, or if the opposition is resolved in favor of the applicant, the DPDT will grant the patent and issue a certificate. The patent will then be valid for 20 years from the original filing date, subject to the payment of annual renewal fees.

Rights and Obligations of Patent Holders

A patent grant provides the holder with a set of exclusive rights, but these rights also come with certain responsibilities.

Exclusive Rights

The patent holder has the right to prevent third parties from:
* Making, using, offering for sale, selling, or importing the patented product.
* Using the patented process or using/selling products obtained directly by that process.

Territorial Nature

It is important to understand that patents are territorial. A patent granted in Bangladesh only provides protection within the borders of Bangladesh. To protect an invention internationally, separate applications must be filed in each country or through the Patent Cooperation Treaty (PCT).

Maintenance Obligations

To keep a patent in force, the holder must pay annual maintenance (renewal) fees. Failure to pay these fees within the prescribed time (including any grace period) will lead to the lapse of the patent, moving the invention into the public domain.

Compulsory Licensing and Public Interest

The Bangladesh Patent Law Overview would be incomplete without discussing the balance between private rights and public welfare. The 2023 Act contains robust provisions for Compulsory Licensing (Sections 49-55).The government may grant a compulsory license to a third party to use a patented invention without the consent of the patent holder under specific circumstances:
1. National Emergency: During times of crisis or extreme urgency.
2. Public Non-Commercial Use: For the benefit of the public.
3. Unreasonable Pricing: If the patented product is not available to the public at a reasonably affordable price.
4. Failure to Work: If the patent is not being worked (used) in Bangladesh within a certain period after the grant.These provisions ensure that the patent system does not become a barrier to essential services, particularly in the healthcare and agricultural sectors.

Infringement and Enforcement Mechanisms

When a third party violates the exclusive rights of a patent holder, it constitutes infringement. The Bangladesh Patent Act, 2023 provides clear avenues for legal redress.

What Constitutes Infringement?

Infringement occurs when someone performs any of the acts reserved for the patent holder (making, selling, importing, etc.) without authorization. This includes both direct infringement and "colorable imitation" where minor changes are made to bypass the literal wording of the claims. The "Doctrine of Equivalents," although not explicitly named in the Act, is often considered by courts to prevent infringers from making insubstantial changes to avoid liability.

Legal Remedies

A patent holder can initiate a civil suit in the District Court. The court has the power to grant several types of relief:
* Permanent Injunction: A court order stopping the infringer from continuing the infringing activities for the remaining term of the patent.
* Interim Injunction: A temporary order to stop infringement while the trial is ongoing, preventing further damage to the patent holder's market share.
* Damages: Monetary compensation for the losses suffered by the patent holder.
* Account of Profits: Requiring the infringer to hand over the profits made from the infringing activities.
* Destruction of Infringing Goods: Ordering the seizure and destruction of products that violate the patent.

The Role of the High Court

Appeals from the decisions of the District Court are heard by the High Court Division of the Supreme Court of Bangladesh. The High Court also has jurisdiction over matters related to the Revocation of Patents (Section 33). A patent can be revoked if it is proven that it should never have been granted in the first place.

Special Considerations: Pharmaceuticals and LDC Graduation

A critical aspect of the Bangladesh Patent Law Overview is the country's status as a Least Developed Country (LDC). Under the TRIPS Agreement, LDCs currently enjoy a waiver from providing patent protection for pharmaceutical products until 2033 (or until they graduate from LDC status).

The 2026 Graduation

Bangladesh is scheduled to graduate from LDC status in November 2026. This graduation will trigger the end of the pharmaceutical patent waiver. The Patent Act, 2023 includes provisions to manage this transition, ensuring that the domestic pharmaceutical industry, which currently provides over 97% of the country's medicine, can adapt to the new IP regime. Post-graduation, new pharmaceutical formulations will be eligible for full patent protection, making strategic IP management a top priority for Bangladeshi pharma companies.

Revocation and Restoration of Patents

The legal lifecycle of a patent can involve challenges even after it has been granted.

Revocation of Patents

Under Section 33 of the Act, a patent can be revoked by the High Court or the Registrar on several grounds, including:
1. Lack of Novelty or Utility: If the invention was not new or useful at the time of filing.
2. Insufficient Disclosure: If the specification does not sufficiently describe the invention.
3. Fraud: If the patent was obtained by false representation.
4. Non-Patentable Subject Matter: If the patent covers something excluded by Sections 6 or 7.

Restoration of Lapsed Patents

If a patent lapses due to unintentional failure to pay the renewal fee, the Act provides a mechanism for its restoration. The patent holder must apply for restoration within a specified period (usually 12-18 months) and prove that the failure to pay was unintentional. If the Registrar is satisfied, the patent can be restored, though rights of third parties who began using the invention during the lapse period are protected.

The Role of the Patent Agent

Given the technical and legal complexity of the patent system, the Bangladesh Patent Law Overview emphasizes the importance of professional assistance. The Act recognizes the role of Registered Patent Agents who are authorized to practice before the DPDT. These professionals possess the unique combination of technical expertise (to understand the invention) and legal knowledge (to draft claims and navigate the Act). TRW Law Firm maintains a team of experts who serve as a bridge between innovators and the regulatory authorities.

Biotechnology and Genetic Resources

Section 7 of the Bangladesh Patent Act, 2023 introduces specific restrictions on inventions related to biological resources. Applicants are often required to disclose the source and geographical origin of biological material used in their inventions. This is in line with the Convention on Biological Diversity (CBD) and aims to prevent "biopiracy" and ensure fair benefit-sharing with local communities. For a country rich in biodiversity like Bangladesh, these provisions are essential for protecting national heritage.

The Economic Impact of a Robust Patent System

A well-functioning patent system is a catalyst for economic growth. By providing legal protection for new technologies, the Bangladesh Patent Law Overview encourages both domestic and foreign investment.

Attracting Foreign Direct Investment (FDI)

Multinational corporations are more likely to establish manufacturing bases or R&D centers in countries where their intellectual property is secure. A strong patent regime signals to the global market that Bangladesh is a safe destination for high-tech investments.

Fostering Local Innovation

For local inventors, the patent system provides a way to monetize their creativity. By licensing their patented technologies to larger manufacturers, small-scale innovators can generate revenue and reinvest in new projects, creating a virtuous cycle of innovation.

Knowledge Spillovers

The requirement for public disclosure in patent applications means that new technical knowledge is eventually available to everyone. This allows other researchers to build upon existing work, leading to a faster overall rate of technological progress in the country.

Recent Legal Developments (2025-2026)

The year 2025 marked a turning point with the full implementation of the Patent Act, 2023. Key developments include:
* Digitalization of the DPDT: The department has introduced online tracking systems for applications, although physical filing remains the primary method.
* Judicial Training: Special training programs for judges have been initiated to handle complex technological disputes more effectively.
* Green Patents: There is a growing movement toward "fast-tracking" patent applications for environmentally friendly technologies to support the nation's climate goals.

How TRW Law Firm Can Assist

At Tahmidur Rahman Remura Wahid (TRW), we understand that an invention is often a person's or a company's most valuable asset. Our dedicated Intellectual Property Law Department provides end-to-end services to protect and leverage your innovations.Our services include:
* Patent Audits and Searches: Identifying patentable assets and evaluating the global landscape.
* Drafting and Filing: Expert preparation of specifications and claims to ensure maximum protection.
* Prosecution: Handling all communications and objections from the DPDT.
* Litigation and Enforcement: Representing clients in infringement suits and revocation proceedings.
* Licensing and Technology Transfer: Drafting agreements to monetize intellectual property.For expert legal guidance tailored to your innovation strategy, contact our specialists or visit our services page.

Book a Consultation: To discuss your patent requirements with our expert attorneys, visit our Booking Portal or email us at info@trw.org.

Frequently Asked Questions (FAQ)

1. How long does it take to get a patent in Bangladesh?

Typically, the process takes between 2 to 4 years, depending on the complexity of the invention and whether any oppositions are filed.

2. Can I protect my software with a patent in Bangladesh?

Software "as such" is not patentable. However, if the software provides a "technical solution to a technical problem" or is part of a larger technical system, it may be eligible for protection.

3. What is the difference between a patent and a utility model?

While a patent requires a significant inventive step, a utility model (often called a "petty patent") usually has lower requirements for inventiveness and a shorter term of protection. The 2023 Act focuses primarily on standard patents.

4. Is a foreign patent valid in Bangladesh?

No. Patents are territorial. If you have a patent in the USA or UK, you must still file a separate application in Bangladesh to receive protection here.

5. What happens if I don't pay the renewal fees?

If the annual renewal fees are not paid, the patent will lapse, and the invention will enter the public domain, meaning anyone can use it without your permission.

6. Can I file a PCT application in Bangladesh?

Yes, Bangladesh is a member of the PCT. You can file an international application through the DPDT as a receiving office or enter the national phase in Bangladesh based on an international PCT application.

Conclusion

The Bangladesh Patent Law Overview highlights a legal system that is rapidly evolving to meet the demands of a modern, innovation-driven economy. With the enactment of the Patent Act, 2023, Bangladesh has provided a clear, predictable, and international-standard framework for the protection of intellectual property. For inventors and businesses, this represents a significant opportunity to secure their technological advantages and contribute to the nation's industrial growth. Trusting an experienced legal partner like Tahmidur Rahman Remura Wahid ensures that your journey from invention to protected asset is navigated with precision and expertise.

References

1. Bangladesh Patent Act, 2023 (Act No. LIII of 2023)
2. Department of Patents, Designs and Trademarks (DPDT), Ministry of Industries
3. WIPO Lex: Bangladesh Intellectual Property Profile
4. Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS)
5. Tahmidur Rahman Remura Wahid (TRW) Intellectual Property Practice