Introduction
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The patentability of computer-related inventions has long been a contentious topic in the context of Indian patent law. Software has become central to virtually all contemporary technological systems, but the Patents Act, 1970, explicitly excludes certain types of computer-implemented inventions from patentability. Section 3(k) excludes “a mathematical or business method or a computer programme per se or algorithms” from patent protection.
The question then becomes where the line should be drawn in the law between a patent-ineligible computer programme and a patent-eligible computer-implemented invention with an actual technical contribution.
The Delhi High Court judgment in BlackBerry Limited v. Controller of Patents and Designs which was delivered on 30th April 2026 is a good example in this regard. In this case the invention was in relation to a patent application by BlackBerry for a method of storing, manipulating and using information and commands on handheld communication devices.
The Court assessed whether the invention was just a set of instructions for the computer or whether there was a well-defined technical effect that distinguished this invention from the prohibited set of instructions under Section 3(k).
This judgment is interesting because Indian courts have tended to take inspiration from the concepts of technical effect/technical contribution to assess the patentability of computer-implemented inventions.
However, it also illustrates that coming up with a computer-implemented method that offers a certain degree of convenience or simplification of a task for the end-user may not necessarily be enough.
Understanding Section 3(k)
Section 3(k) of the Act is part of the list of subject matter that are not considered an “invention” under the Patents Act, 1970. It excludes mathematical methods, business methods, computer programmes per se, and algorithms.
The phrase “per se” is of particular importance here. If the legislature wanted to disallow patents on any invention that employed software, it could have simply disallowed computer programmes. The fact that the phrase “per se” is included instead of, for example, “a computer programme” has required courts and the Patent Office to determine whether the claimed invention goes beyond the computer programme itself.
This has in turn created the distinction between the technical effect or technical contribution test.
The question is not just whether software is used; it is more important whether the invention makes a technical contribution or produces a technical effect, beyond simply carrying out instructions on a computer. As a result, the Patent Office’s approach to computer-implemented inventions has changed over the years. The 2017 Computer-Related Inventions Guidelines moved away from the prior insistence that a patentable invention must show novel hardware. It now focuses more on the substance of the invention and whether it provides a technical contribution.
The decision in the Ferid Allani case underlined that a patent application that clearly was in relation to a computer-implemented invention should not be rejected simply because it involves a computer programme.
The BlackBerry Case
Underlying the analysis is the requirement of the production of technical effect or technical contribution. The Blackberry decision, The Patent Application No. 1976/DEL/2008 filed by Blackberry was titled “Colour Differentiating a Portion of a Text Message Shown in a Listing on a Handheld Communication Device.”
The application was filed in 2008 and examined by the Indian Patent Office. The claims of the application were objected to on various grounds, including under Section 3(k) on the basis that they fell within the ambit of a computer programme. The Controller consequently refused the application, which was challenged before the Delhi High Court.
BlackBerry advanced the argument that the claimed invention goes beyond a computer programme.
The invention, in fact, involved a technical solution to a problem of processing, displaying, and managing information on handheld communication devices. The Court was thus required to examine when software ceases to be just software within the scope of Section 3(k) of the Patent Act, 1970.
The technical effect?
In its reasoning, the Delhi High Court reaffirmed the importance of the “technical effect” or “technical contribution” in establishing that a patent does not fall within the prohibition of Section 3(k).
The Court noted that a disembodied algorithm or computer program per se does not necessarily have to be patentable and further that the inquiry turns on whether the invention is being claimed as one that provides a technical solution to a technical problem.
In this regard, one should pay attention to what the invention actually teaches instead of looking just at the language in which the application is worded. For example, there is a difference between describing a business process and describing how the process will be carried out on a computer, and merely describing an algorithm, such as by means of a flow chart, will not make it patentable. Instead, one must consider what concrete technical effect or contribution to technical knowledge the application makes.
For instance, if the invention provides a new and better way of operating a computer or a new method for reducing memory use or increasing efficiency or enhancing security, this might result in a patentable technical contribution. The patent application in the Blackberry case was therefore examined to determine what the invention was and whether it addressed a technical problem and resulted in a technical contribution. In deciding the former, the Court looked at what problem the invention set out to address and how the invention actually set about solving that problem.
In deciding the latter, the Court examined what technical effect this solution gave rise to.
Why did the Blackberry patent application not clear the test?
Although the Court had acknowledged the importance of technical effect and technical contribution, in the end, the Court held that the subject patent application was not patentable.
The Court concludes the invention does not meet the requirements of Section 3(k) The Court analysed the claims and concluded that the invention does not have the required technical effect to disqualify it from coming within the scope of Section 3(k). The Court explained that mere execution of a sequence of instructions by a computer device is not enough if the contribution of the invention does not qualify as a technical effect. The Court’s reasoning highlighted that where implementation of a sequence of instructions merely involves execution by a computing device then the absence of any genuine technical contribution will lead to patent application rejection.
Significantly, this judgment clarifies that the presence of the ‘technical effect’ cannot be automatically presumed to result in patentability.
In such cases, the invention must have some additional property that makes it a patented invention, rather than simply a computer programme. Merely executing instructions on a computing device does not amount to a technical effect where the overall contribution does not give rise to a real technical advancement. The Court also differentiated between a technical advancement and an advancement of convenience or the manner of the presentation of information to a user. The fact that software might make a given task easier or more convenient does not necessarily equate to a technical effect.
This distinction is crucial for modern patent practice, as it may be that a number of software applications improve how a user interacts with information, but not every such improvement will form the basis of patentability.
Technical Effect is not the Same as Any Advantage It is key to remember that the ‘technical effect’ requirement is not satisfied by any benefit which occurs to a given application. The invention may be of commercial value, cheap, faster for the user, or otherwise more efficient to use, but it may not, nonetheless, be a technical contribution. Such a distinction can be explained by the following two examples.
A set of instructions that changes the way in which information is displayed in order to make it more convenient for a user to see may not fulfill the requirement of a technical contribution if the computing system that is used to implement it remains largely unchanged. If there is a technical change in the way in which a computer system functions, such as improving memory efficiency, security of the system or processing speed, then a stronger case can be made for technical effect. This distinction is between an improvement in user experience, and an improvement in the system in terms of its technical implementation.
It is to be noted that a technical effect does not have to involve a physical change in hardware; there is less insistence now on physical hardware innovations in India.
Instead, the court looks to see whether the whole invention results in a real technical contribution. Broader Significance of the Decision The decision also must be considered within the broader context of the development of India’s jurisprudence in the realm of computer-implemented inventions. Previous decisions, such as Ferid Allani v. Union of India, indicate that having a computer program included in the patent application does not lead to an invention being necessarily patentable.
Later decisions have had a closer look at the technical contribution as opposed to having a computer program present in the application.
The Delhi High Court decision in 2026 on this issue adds yet another perspective to the issue in that it stresses that the ‘technical effect’ should not be interpreted in a way that would exclude all computer-implemented inventions. This Court decision cautions that the ‘technical effect’ requirement should not be interpreted so broadly as to exclude all computer-related inventions. The ‘technical effect’ requirement has to have real substance even if the patent system does not want to grant a patent for an abstract algorithm or business method.
This is because many modern technical innovations necessarily make use of computer programming. However, there is a difference, as explained above, between an improvement in how the user interacts with a piece of information and an improvement in the technical operation of the system. This distinction is crucial in light of contemporary technology.
It is also important to note that a ‘technical effect’ does not necessarily need to involve a physical change in hardware and modern jurisprudence indicates that this is not an absolute requirement.
Also Read: Aventose Energy v. Patent Controller: Madras HC Sets Aside Rejection
Conclusion
The focus should be on whether the invention has a real effect. The implications of this decision for applicants for computer-implemented patents are that the claim drafting and the description should specify that there is a specific technical problem, a unique technical solution and a resulting technical contribution. The importance of this case is that it means that although the ‘technical effect’ is not to be read so broadly as to exclude all computer-implemented patents, the ‘technical effect’ requirement should not be read as a presumption that every computer-implemented patent is patentable. The technical-effect test serves as the dividing line between software being an instruction set and software being part of a true technological invention.
As computing and technological innovation advances in the future, it will be interesting to observe how this distinction is drawn in the patent application context.
An exasperating impact of the existence of the debate around whether Section 3(k) prohibits software patents is that this question is not here to stay. Instead, the challenge continues to be how patent law finds the boundary between the software and the technological, and the Circuit Judge has identified the same in the context of the ‘technical effect’ requirement in the present case.
