Bangladesh Patent Law Overview: A Comprehensive Legal Guide for 2026
Introduction: Why Patent Protection Matters in Bangladesh
Intellectual property has become one of the most valuable assets in today’s innovation-driven economy. For Bangladesh, which is progressing from Least Developed Country status toward a developing economy, a strong and modern patent system is increasingly important for encouraging innovation, attracting investment, and protecting technological development.
A patent provides an inventor with exclusive legal rights over a qualifying invention for a limited period in exchange for disclosure of the invention to the public. This system creates a balance between rewarding innovation and making technical knowledge available for future development.
Bangladesh’s patent framework has undergone significant modernization in recent years. The transition from the older Patents and Designs Act, 1911 to the Bangladesh Patent Act, 2023 represents an important development in the country's intellectual property regime. For inventors, startups, technology companies, manufacturers, pharmaceutical businesses, and investors, understanding Bangladesh patent law is essential for protecting valuable innovations and managing intellectual property strategically.
Evolution of Patent Law in Bangladesh
For many years, patent matters in Bangladesh were primarily governed by the Patents and Designs Act, 1911. Although this legislation remained in operation for decades, technological development and international intellectual property standards created a need for comprehensive reform.
The Bangladesh Patent Act, 2023, designated as Act No. LIII of 2023, replaced the previous framework and introduced a more modern approach to patent protection. According to the source, the new Act officially came into force on February 27, 2025.
The new legislation focuses specifically on patents and introduces a fixed 20-year patent term calculated from the filing date. It also provides a more comprehensive substantive examination framework and incorporates international filing concepts associated with PCT and WIPO standards.
Patentability Requirements in Bangladesh
Not every new idea qualifies for patent protection. Under the Bangladesh Patent Act, 2023, an invention must satisfy fundamental patentability requirements before protection can be granted.
The first requirement is novelty. An invention must be new and must not already form part of the prior art. Prior art can include information made available to the public anywhere in the world through written or oral disclosure, use, or other means before the relevant filing or priority date. This makes early disclosure particularly important for inventors because publicly presenting an invention before filing may negatively affect its patentability.
The second requirement is inventive step, sometimes described as non-obviousness. An invention must contain a technical development that would not be obvious to a person skilled in the relevant field. A minor or self-evident modification of an existing product or process may therefore fail this requirement.
The third requirement is industrial applicability. The invention must be capable of being made or used in an industry, including agriculture. Purely theoretical concepts that cannot provide practical industrial utility generally do not satisfy this requirement.
What Cannot Be Patented in Bangladesh?
The Bangladesh Patent Act, 2023 excludes certain categories of subject matter from patent protection. These exclusions are intended to protect public interests and prevent private monopolization of certain fundamental knowledge or activities.
Discoveries, scientific theories, and mathematical methods are generally excluded because discovering something that already exists in nature or creating a mathematical formula does not necessarily constitute a patentable invention.
Business methods and rules of games are also generally excluded. Similarly, computer programs as such are not patentable, although software-related inventions with an appropriate technical character may potentially qualify.
Diagnostic, therapeutic, and surgical methods for treating humans or animals are excluded from patent protection. Certain plants, animals, and essentially biological processes are also excluded, subject to the statutory treatment of microorganisms and other relevant categories.
Inventions whose commercial exploitation would be contrary to public order or morality may also be excluded from patent protection.
Patent Registration Process in Bangladesh
Patent registration requires careful preparation because the process involves technical documentation, legal requirements, examination, publication, and potential opposition.
Before filing an application, conducting a comprehensive patent search is highly valuable. A search can help determine whether an invention appears to be novel and can reduce the risk of rejection or future disputes. Patent searches may involve Bangladeshi records as well as international databases such as WIPO PATENTSCOPE and the European Patent Office’s Espacenet.
An inventor may initially file a Provisional Specification when the invention is still under development but the applicant wishes to establish a priority date. A Complete Specification must subsequently be filed within the prescribed period. Where the invention is fully developed, a Complete Specification may be filed directly.
The patent application requires important technical and legal information, including the formal application, detailed specification, claims, drawings where necessary, and an abstract. Among these, the claims are particularly important because they define the legal boundaries of the protection being requested.
Publication and Substantive Examination
After filing, a patent application is generally kept confidential for a specified period before being published. The source states that applications are typically published after 18 months, although early publication may be requested.
The Bangladesh Patent Act, 2023 also introduced a formal Request for Examination. According to the source, this request must be filed within 36 months from the application filing date. Failure to submit the request within the prescribed period can result in the application being deemed withdrawn.
During substantive examination, the examiner evaluates whether the invention satisfies requirements such as novelty, inventive step, and industrial applicability. The examiner may issue an examination report or Office Action raising objections, to which the applicant must respond within the applicable timeframe.
Opposition and Grant of Patent
Once a patent application is accepted and published for opposition, an interested person may file an opposition within the prescribed period. Potential grounds may include wrongful acquisition of the invention, prior publication or public use, lack of novelty or inventive step, or the subject matter being excluded from patentability.
If no successful opposition prevents registration, the Department of Patents, Designs and Trademarks, commonly known as DPDT, may grant the patent and issue the relevant certificate.
A patent granted under the framework described in the source remains valid for 20 years from the original filing date, subject to compliance with applicable renewal requirements.
Rights of Patent Holders
A patent provides the holder with exclusive rights over the protected invention. These rights generally allow the patent owner to prevent unauthorized third parties from making, using, offering for sale, selling, or importing the patented product.
Where the patent protects a process, the owner may also have rights concerning unauthorized use of that process and products obtained directly through it.
However, patent protection is territorial. A patent granted in Bangladesh protects the invention within Bangladesh and does not automatically provide protection in other countries. Businesses seeking international protection may need to file separate applications in relevant jurisdictions or use appropriate international filing mechanisms such as the Patent Cooperation Treaty.
Patent Renewal and Maintenance
Obtaining a patent is not the end of the patent management process. Patent holders must comply with applicable annual maintenance or renewal fee requirements to keep their rights in force.
Failure to pay renewal fees within the prescribed period, including any applicable grace period, can result in the patent lapsing. Once protection is lost and the invention enters the public domain, others may potentially use the invention without requiring permission from the former patent holder.
Compulsory Licensing and Public Interest
Patent law seeks to balance private intellectual property rights with broader public interests. The Bangladesh Patent Act, 2023 contains provisions concerning compulsory licensing.
Under specific circumstances, the government may authorize a third party to use a patented invention without the patent holder’s consent. The source identifies circumstances including national emergencies, public non-commercial use, unreasonable pricing, and situations where the patent is not being adequately worked or used in Bangladesh within the relevant period.
These provisions are particularly significant where patented technologies may be important for public health, essential services, agriculture, or other areas of public interest.
Patent Infringement and Enforcement
Patent infringement occurs when a third party performs an act reserved for the patent holder without appropriate authorization. This may include unauthorized manufacturing, use, sale, offering for sale, or importation of a patented product.
The source also discusses situations involving colorable imitation, where minor modifications may be made with the intention of avoiding the literal wording of patent claims. Courts may consider the substance of the alleged infringement rather than allowing insignificant changes to defeat legitimate patent protection.
A patent holder may seek legal remedies through the appropriate court. Potential remedies described in the source include permanent injunctions, interim injunctions, damages, an account of profits, and the seizure or destruction of infringing goods.
These remedies can be important for protecting market position and preventing unauthorized commercial exploitation of valuable inventions.
Role of the High Court in Patent Matters
Appeals from relevant District Court decisions may be heard by the High Court Division of the Supreme Court of Bangladesh. The High Court also has jurisdiction in matters involving patent revocation under the applicable statutory provisions.
A patent may be challenged and revoked where it is established that the patent should not have been granted in the first place. This makes careful patent prosecution and compliance important even after a patent has been granted.
Pharmaceutical Patents and Bangladesh’s LDC Graduation
Bangladesh’s transition from Least Developed Country status is particularly significant for pharmaceutical intellectual property. The source identifies the TRIPS-related pharmaceutical patent waiver available to LDCs and explains that Bangladesh’s scheduled graduation in November 2026 may have major implications for the domestic pharmaceutical industry.
The source states that the Patent Act, 2023 contains provisions intended to manage this transition. Bangladesh’s pharmaceutical industry currently supplies more than 97% of the country's medicines, making the changing patent environment strategically important.
Following graduation, new pharmaceutical formulations are expected to become eligible for stronger patent protection, increasing the importance of strategic intellectual property planning for pharmaceutical companies operating in Bangladesh.
Patent Revocation and Restoration
Patent rights may face legal challenges even after registration. Under the framework described in the source, a patent may be revoked on grounds such as lack of novelty or utility, insufficient disclosure, fraud or false representation, or protection of subject matter that is legally excluded from patentability.
The law also provides a mechanism for restoring a patent that has lapsed because of an unintentional failure to pay a renewal fee. The patent holder must apply within the applicable period and demonstrate that the failure was unintentional. Where restoration is granted, certain rights of third parties who began using the invention during the lapse period may remain protected.
Importance of Registered Patent Agents
Patent matters combine technical and legal complexity. A patent application must accurately describe the invention while also defining the scope of protection through carefully drafted claims.
The Bangladesh patent framework recognizes Registered Patent Agents who are authorized to practice before the DPDT. Their combined technical and legal understanding can be valuable when preparing applications, responding to examination objections, and managing the patent registration process.
Biotechnology and Genetic Resources
Bangladesh’s biodiversity creates particular considerations for biotechnology-related inventions. The source states that Section 7 of the Bangladesh Patent Act, 2023 introduces restrictions relating to biological resources and may require applicants to disclose the source and geographical origin of biological materials used in an invention.
These provisions are connected with broader international principles concerning biodiversity and benefit-sharing. For biotechnology companies and researchers, understanding these requirements can be important when developing and commercializing inventions involving biological resources.
Economic Importance of Patent Protection
A strong patent system can contribute significantly to economic development. By providing legal protection for innovation, patents can encourage domestic and international investment in research, manufacturing, and technology.
Foreign companies may be more willing to establish manufacturing facilities or research and development centers in countries where intellectual property rights are protected through a predictable legal framework. A reliable patent system can therefore strengthen Bangladesh’s attractiveness as an investment destination.
For local innovators, patents can also create opportunities to commercialize inventions through licensing, technology transfer, manufacturing partnerships, and investment. Public disclosure through the patent system can additionally contribute to knowledge development by allowing future researchers to build upon existing technical information.
Recent Patent Law Developments in 2025 and 2026
The implementation of the Patent Act, 2023 represents a major development in Bangladesh’s intellectual property system. The source identifies several developments associated with this period, including increased digitalization within DPDT, online application tracking, judicial training relating to technological disputes, and growing interest in fast-tracking environmentally friendly technologies.
These developments reflect the broader movement toward a more modern and innovation-oriented intellectual property environment in Bangladesh.
How The Justice Corner Can Help
Patent protection involves much more than simply filing an application. Inventors and businesses need to consider patentability, prior-art searches, drafting, prosecution, enforcement, licensing, international protection, and long-term intellectual property strategy.
The Justice Corner can assist innovators and businesses in understanding their legal options and protecting valuable intellectual property. Professional legal support can be particularly useful when evaluating whether an invention is potentially patentable, preparing documentation, responding to examination objections, managing infringement concerns, or developing licensing and technology-transfer arrangements.
For startups, technology companies, manufacturers, pharmaceutical businesses, researchers, and individual inventors, obtaining professional guidance at an early stage can help reduce avoidable risks and create a stronger intellectual property strategy.
Frequently Asked Questions
How long does it take to obtain a patent in Bangladesh?
The source states that the patent process typically takes between two and four years, depending on factors such as the complexity of the invention and whether opposition proceedings arise.
Can software be patented in Bangladesh?
Software “as such” is not patentable under the framework described in the source. However, software that provides a technical solution to a technical problem or forms part of a broader technical system may potentially qualify for protection.
Is a foreign patent automatically valid in Bangladesh?
No. Patent rights are territorial. A patent granted in another country does not automatically provide patent protection in Bangladesh. Appropriate protection must be obtained in Bangladesh through the applicable filing process.
What happens if annual patent renewal fees are not paid?
Failure to pay applicable renewal fees can cause the patent to lapse. Once protection ends and the invention enters the public domain, others may potentially use it without the former patent holder’s permission.
Can applicants use the PCT system for patent protection involving Bangladesh?
The source states that Bangladesh is a member of the Patent Cooperation Treaty and that international applicants can use the applicable PCT route involving Bangladesh.
Conclusion
Bangladesh’s patent system is undergoing significant modernization to support an increasingly innovation-driven economy. The Bangladesh Patent Act, 2023 provides a modern statutory framework covering patentability, registration, examination, rights of patent holders, enforcement, compulsory licensing, and other important aspects of intellectual property protection.
For inventors and businesses, obtaining patent protection can provide an important competitive advantage while helping secure investment in research and development. However, successful patent protection requires strategic planning, careful documentation, proper claim drafting, timely compliance, and effective enforcement.
As Bangladesh’s technology, pharmaceutical, manufacturing, biotechnology, and digital sectors continue to grow, intellectual property protection will become increasingly important. Understanding the country's patent framework and obtaining appropriate professional legal guidance can help innovators transform valuable ideas into legally protected and commercially meaningful assets.
Disclaimer: This article is provided for general informational purposes only and does not constitute legal advice. Patent laws, regulations, procedures, and administrative practices may change. Anyone seeking patent protection or facing a patent-related dispute should obtain professional advice based on the latest applicable law and the specific circumstances of the matter.