A) ABSTRACT / HEADNOTE

Blackberry Limited v. Controller of Patents and Designs, 2026:DHC:3668 concerns the refusal of Patent Application No. 1976/DEL/2008. The application claimed an invention titled “Colour Differentiating a Portion of a Text Message Shown in a Listing on a Handheld Communication Device.” The Delhi High Court examined whether colour coding recipients in outgoing messages, based on message address characteristics, constituted a patentable invention. The appellant argued that the invention solved a technical problem. It claimed that the invention improved handheld-device usability. It also relied on technical effect and technical contribution under Indian CRI jurisprudence. The Controller resisted the appeal. It submitted that the invention only used software rules. It also argued that the problem was human error, not a technical problem. The Court dismissed the appeal. It held that the claimed invention lacked inventive step under Section 2(1)(j) read with Section 2(1)(ja). It further held that the claims were barred by Section 3(k) of the Patents Act, 1970. The Court upheld the Controller’s refusal under Section 15.

Keywords: Computer Related Inventions, Section 3(k), technical effect, inventive step, patent refusal, colour coding, handheld communication device, obviousness.

B) CASE DETAILS

i) Judgement Cause Title

Blackberry Limited v. Controller of Patents and Designs, 2026:DHC:3668.

ii) Case Number

C.A.(COMM.IPD-PAT) 14/2022.

iii) Judgement Date

30 April 2026.

iv) Court

High Court of Delhi at New Delhi.

v) Quorum

Hon’ble Mr. Justice Tejas Karia.

vi) Author

Tejas Karia, J.

vii) Citation

2026:DHC:3668. The Indian Kanoon record also identifies this decision as Blackberry Limited v. Controller of Patents and Designs on 30 April 2026. (Indian Kanoon)

viii) Legal Provisions Involved

The main provisions were Section 117A of the Patents Act, 1970, Section 15 of the Patents Act, 1970, Section 2(1)(j) of the Patents Act, 1970, Section 2(1)(ja) of the Patents Act, 1970, Section 3(k) of the Patents Act, 1970, Section 11A, and Section 77(1)(f). The dispute mainly turned on inventive step and the statutory exclusion of computer programs per se or algorithms.

ix) Judgments Overruled by the Case

No judgment was overruled. The Court applied existing Indian patent law principles. It distinguished patentable CRIs from excluded software or algorithmic claims.

x) Related Law Subjects

This case relates to Intellectual Property Law, Patent Law, Computer Related Inventions, Information Technology Law, Administrative Law, and Commercial IP Appellate Jurisdiction.

xi) Name of Counsels Appearing for Parties

For the appellant, Mr. Pravin Anand, Mr. Ashutosh Upadhyaya, and Mr. Sandeep Bhola, Advocates appeared. For the respondent, Mr. P.S. Singh, CGSC with Mr. Rajneesh Kumar Sharma, Ms. Minakshi Singh, Mr. Ashutosh Bharti, and Ms. Shivangi Sharma, Advocates appeared.

C) INTRODUCTION AND BACKGROUND OF JUDGEMENT

The appeal arose from two refusal orders. The first order was dated 11 October 2019. The second order was dated 5 March 2020. Both were passed by the Assistant Controller of Patents and Designs. The appellant invoked Section 117A of the Patents Act, 1970. It sought quashing of the refusal. The application was filed on 20 August 2008. It claimed priority from European Patent Application No. 07117003.9 dated 21 September 2007. The invention concerned colour differentiation of text message portions on handheld communication devices. Its object was recipient identification. It sought to reduce mistaken message transmission. The appellant said this was important for handheld devices. Such devices had small screens. Users could not manage recipients as easily as on desktops.

The Court treated the dispute as a classic CRI controversy. It examined whether the claimed subject matter crossed the statutory threshold. The appellant framed the invention as a device-level solution. It argued that the invention improved user interaction. It said the colour-coded recipient display allowed quick visual recognition. It further said this saved time and device resources. The respondent framed the claim differently. It said the claimed advance was a software rule. It involved accepting addresses, parsing characteristics, and applying colours. The Court accepted the respondent’s framing. It found no real technical improvement in hardware. It also found no technical effect intrinsic to the computer system. This distinction became decisive under Section 3(k).

D) FACTS OF THE CASE

The appellant, BlackBerry Limited, is a Canadian corporation. It is known for enterprise software, telecommunication solutions, IoT technologies, and earlier BlackBerry smartphones. The application related to handheld wireless communication devices. It focused on limited screen size. According to the appellant, handheld devices required different user interfaces. Users often needed help identifying intended recipients. The invention proposed visual differentiation. Recipient names could be colour coded. The colour would depend on address characteristics. These could include host name, domain name, or organisation. The intended result was easier recognition before sending a message.

The Patent Office issued the First Examination Report on 10 September 2014. The FER objected to novelty under Section 2(1)(j). It cited EP1767008(A1) as D1. It also cited US6671718B1 as D2 and US2003/0084109A as D3. The FER also raised Section 3(k) objections. The appellant filed its reply on 1 May 2015. A hearing notice was issued on 6 August 2019. During the first hearing, the Controller orally raised Section 3(k). The appellant filed written submissions on 4 September 2019. The application was refused by Impugned Order I. The appellant then filed a review under Sections 77(1)(f) and 15. The review was dismissed through Impugned Order II. The present appeal challenged both orders.

The invention was described through device diagrams. Page 19 of the judgment shows Figure 1. It depicts a handheld communication device with a display, keyboard, navigation keys, and trackball. Page 20 shows Figure 2. It depicts a wireless network arrangement. It includes a microprocessor, display, keyboard, receiver, transmitter, memory, and communication subsystems. Page 22 shows Figure 7. It illustrates the screen interface and the handheld device layout. These visuals supported the appellant’s argument that the invention operated in a handheld hardware environment. Yet the Court found that the actual contribution remained algorithmic.

E) LEGAL ISSUES RAISED

• The first issue was whether the claimed invention qualified as an invention under Section 2(1)(j). This required novelty, inventive step, and industrial application.
• The second issue was whether it had inventive step under Section 2(1)(ja). That provision requires technical advancement, economic significance, or both. It also requires non-obviousness to a person skilled in the art. The Court had to decide whether D1, D2, and D3 rendered the claim obvious.
• The third issue was whether the invention was excluded under Section 3(k). That provision excludes mathematical methods, business methods, computer programs per se, and algorithms. The real question was whether colour-coding recipients produced a technical effect. The Court also asked whether the claimed solution improved the computer itself. It considered whether better human recognition could become a technical contribution. The Court answered this against the appellant. It held that avoiding wrong recipients was not a technical problem. It was a human-dependent problem.
• The fourth issue concerned appellate interference. The Court had to determine whether the Controller’s reasoning was perverse or legally infirm. The appellant alleged hindsight reconstruction. It argued that the Controller combined prior arts without proper motivation. The respondent defended the refusal. It submitted that the combination of D1, D2, and D3 was obvious.

F) PETITIONER / APPELLANT’S ARGUMENTS

The appellant submitted that the invention solved a real device-level problem. Handheld communication devices had limited screens. Users could not conveniently apply filters. They could also misidentify recipients. A mistaken recipient could cause confidentiality risks. The invention provided immediate visual identification. It colour coded recipient names using address characteristics. These characteristics could include domain or host information. The appellant argued that this was not a mere presentation rule. It was a technical interaction between messaging software and handheld communication architecture.

The appellant relied on Ferid Allani v. Union of India, 2019 SCC OnLine Del 11867. In that case, the Delhi High Court stated that computer-related inventions should be examined for technical contribution. The search result confirms that the case concerned a patent application for a method and device for accessing web-based sources and services. (Indian Kanoon) The appellant used this case to argue that software involvement is not fatal. It submitted that modern inventions often use computer programs. The proper inquiry is the effect produced. The appellant also relied on Microsoft Technology Licensing, LLC v. Assistant Controller of Patents and Designs, 2023:DHC:3342. That decision criticised refusals based solely on computer-executable instructions. It emphasised the need to examine technical merit. (Indian Kanoon)

The appellant also attacked the obviousness reasoning. It said D1 concerned received messages. It grouped incoming messages by message attributes. It did not teach colour coding recipients before sending. It said D2 required confirmation boxes. It displayed addresses before transmission. It did not automatically colour differentiate names while drafting. The appellant argued that combining D1 and D2 required hindsight. It relied on Cipla Ltd. v. F. Hoffmann-La Roche Ltd., 2015:DHC:9674-DB. That decision is frequently cited for obviousness principles and caution against hindsight. (Indian Kanoon) The appellant also invoked Enercon (India) Ltd. v. Aloys Wobben, Order No. 123/2013. It argued that known elements do not automatically make an invention obvious. There must be a coherent lead from the prior art.

The appellant further submitted that foreign grants supported patentability. It referred to EP2275980B1 and US8682394B2. It argued that similar claims had been granted in major jurisdictions. It also invoked Raytheon Company v. Controller General of Patents and Designs, 2023:DHC:6673 and Halliburton Energy Services Inc’s Patent Application, [2011] EWHC 2508 (Pat). These cases were used to show that improved user interface or better device operation may create technical effect. The appellant’s core argument was simple. The invention reduced human-device steps. It helped prevent unintended communication. It improved handheld communication reliability. Therefore, it was patentable.

G) RESPONDENT’S ARGUMENTS

The respondent submitted that the claimed invention was obvious. It argued that D1 used message attributes for categorisation. It further argued that D2 addressed mistaken recipients. According to the respondent, a skilled person could combine both teachings. D3 also disclosed visual differentiation of messages for different users. Therefore, colour coding recipients using address characteristics did not involve inventive step. The respondent argued that the change was only algorithmic. It was a change in categorisation logic. It did not create a new technical architecture.

The respondent strongly relied on Section 3(k). It said the alleged feature was not technical. Differentiating recipients and notifying the sender may provide comfort. It may improve convenience. But convenience is not patentable technical effect. The respondent argued that choosing the wrong recipient is a human error. It is not a technical defect in a communication system. A noise problem in a communication channel affects all users similarly. Recipient error varies from person to person. This distinction was central. The respondent said technicality cannot depend on subjective human mistakes.

The respondent also argued that colour coding is address-book management. It is a data management style. The claims recited software steps. These included associating colour, accepting message addresses, examining address characteristics, and displaying information. The hardware was ordinary. It was a normal wireless communication device. It executed the program conventionally. There was no improved processor functioning. There was no memory saving. There was no new communication protocol. The respondent therefore said the claims were computer program per se or algorithm. It relied on Blackberry Limited v. Assistant Controller of Patents and Designs, 2024:DHC:6571, where the Delhi High Court discussed non-patentability of computer programs per se. (Indian Kanoon)

H) RELATED LEGAL PROVISIONS

Section 117A of the Patents Act, 1970 provides the appellate route. It allows appeals against certain Controller orders. The appellant used this provision to challenge refusal orders. Section 15 empowers the Controller to refuse an application. This power applies when an application does not comply with the Act. In this case, refusal rested on lack of inventive step and Section 3(k) exclusion.

Section 2(1)(j) defines invention. It requires a new product or process. It must involve inventive step. It must also be capable of industrial application. Section 2(1)(ja) defines inventive step. It requires technical advance over existing knowledge, economic significance, or both. It must also make the invention non-obvious to a skilled person. The Court applied these provisions to D1, D2, and D3. It held that the claimed invention was obvious in light of these prior arts.

Section 3(k) is the decisive exclusion. It says that “a mathematical or business method or a computer programme per se or algorithms” is not an invention. The Court treated this provision as requiring more than software-based functionality. A CRI must show technical effect. It must improve the system’s functioning. It must solve a technical problem. The Court held that colour coding recipients did not satisfy this standard.

I) PRECEDENTS ANALYSED BY COURT IN THIS CASE

The Court considered Microsoft Technology Licensing LLC, One Microsoft Way v. Assistant Controller of Patents, Patent Office, 2024 SCC OnLine Mad 2785. The judgment used it for the proposition that a CRI may survive Section 3(k). But it must produce a technical effect. It must improve system functioning or provide a technical solution. The Court distinguished the present case. It found no improvement in computer functioning.

The appellant relied on Ferid Allani v. Union of India, 2019 SCC OnLine Del 11867. The case supports the principle that software-based inventions should not be rejected mechanically. It requires examination of technical contribution. The Court did not reject that principle. It found the principle inapplicable on facts. Here, the claimed contribution was recipient colour coding. It did not enhance hardware or system operation.

The appellant relied on Microsoft Technology Licensing, LLC v. Assistant Controller of Patents and Designs, 2023:DHC:3342. That case recognised the importance of technical effect and contribution. It cautioned against rejecting CRIs merely because they use algorithms. The search result confirms that the Controller’s reasoning in that matter focused on computer-executable instructions and algorithms. (Indian Kanoon) The present Court distinguished the appellant’s invention. It held that ordinary execution of a colour-coding algorithm is insufficient.

The appellant relied on Cipla Ltd. v. F. Hoffmann-La Roche Ltd., 2015:DHC:9674-DB. It used this case to resist hindsight analysis. The Court still held that D1, D2, and D3 supplied enough teaching. It found the claimed invention obvious. The respondent relied on Vincent Panikurlangara v. Union of India, (1987) 2 SCC 165 and Dr. Shivarap Shantaram Wagle v. Union of India, (1988) 2 SCC 115. These cases cautioned judicial restraint in specialised scientific matters. The Court’s final reasoning, however, rested mainly on statutory patentability.

H) JUDGEMENT

a) RATIO DECIDENDI

The ratio is that a software-implemented colour-coding method for recipient identification is not patentable when it does not produce a genuine technical effect. The Court held that the invention lacked inventive step. D1 disclosed message attribute-based visual categorisation. D2 addressed prevention of unintended recipients. D3 disclosed visually distinguishable message formats for different users. Together, these disclosures made the claimed invention obvious to a skilled person. The shift from received messages to outgoing recipients did not create inventiveness. The Court treated it as a predictable algorithmic modification.

The second ratio concerns Section 3(k). The Court held that the invention’s real contribution lay in algorithmic rules. The claimed steps accepted message addresses, examined address characteristics, and displayed colour-coded names. These were software limitations. The ordinary handheld device executed them conventionally. There was no hardware improvement. There was no improvement in memory, processor efficiency, communication throughput, network reliability, or device architecture. The Court therefore held that the invention was a computer program per se or algorithm.

The Court also held that avoiding recipient mistakes was not a technical problem. It was a user-dependent problem. A technical problem must be intrinsic to the system. It must not vary merely because different users behave differently. The Court gave the example of communication noise. Noise affects users using the same system. Wrong-recipient selection depends on human conduct. Therefore, the solution remained administrative or convenience-based. It did not become technical merely because implemented on a handheld communication device.

b) OBITER DICTA

The Court’s broader observations clarify Indian CRI law. A CRI is not excluded only because software is involved. The decisive test remains technical effect or technical contribution. But this effect must be real. It must improve system functionality. It must be intrinsic to the machine or technical process. Improved user comfort is not enough. Better visual perception is not enough. Reduced embarrassment or confidentiality risk is not enough. These may be business or administrative benefits. They do not automatically become technical effects.

The Court also observed that reliability must be technical reliability. It must improve the computer or system itself. The appellant argued that the invention improved communication reliability. The Court rejected this. It said the user may still err. If many recipients have similar names, colour coding may still fail. A user may forget what colour corresponds to which recipient. Therefore, reliability improvement was external and user-dependent. It was not intrinsic to the device.

c) GUIDELINES

The Court did not issue formal guidelines. Yet the judgment provides practical guidance. A CRI patent claim should identify a technical problem within the device or system. It should show a technical solution. It should demonstrate an improvement beyond ordinary software execution. It should not merely improve user convenience. It should not merely reorganise data presentation. It should not rely only on address-book management, colour tagging, alerts, or interface display rules.

For inventive step, the judgment shows that prior arts may be combined when they address related problems. D1 taught attribute-based visual categorisation. D2 taught recipient verification before sending. D3 taught visual differentiation for users. The Court accepted this combination. Therefore, applicants should explain why a skilled person would not combine prior arts. They must identify a concrete technical barrier. They must avoid relying only on functional differences.

I) CONCLUSION & COMMENTS

The decision is important for Indian patent law. It narrows the route for user-interface CRI patents. The Court did not deny that software inventions can be patentable. It accepted the technical effect doctrine. Yet it demanded a strict connection between the claimed contribution and system improvement. This is significant. Many digital inventions improve user experience. Many reduce user effort. Many improve compliance or reduce human error. This judgment says such benefits are not enough. They must translate into technical improvement.

The Court’s approach is persuasive in one sense. Patent law should not protect every interface choice. Colour coding is often an information-design technique. It may be useful. It may be commercially valuable. But usefulness is not always inventiveness. The respondent successfully framed the invention as ordinary algorithmic categorisation. Once framed that way, Section 3(k) became difficult to overcome. The appellant’s strongest point was small-screen handheld context. But the Court considered the hardware conventional. It found no special interaction between colour coding and device architecture.

The judgment also reflects a stricter approach than some earlier CRI cases. Ferid Allani and Microsoft Technology Licensing encouraged examination of technical contribution. This case applies that test against the applicant. It shows that citing technical effect is not enough. The specification and claims must demonstrate it. A patent applicant should draft claims around concrete system performance improvements. These may include memory saving, latency reduction, protocol improvement, bandwidth reduction, security architecture, processor optimisation, or hardware interaction. Merely preventing user mistakes may fail.

The case also warns against overclaiming user-interface conveniences. The Court treated the invention as data management. It used the human-error nature of the problem to reject technicality. This reasoning may influence future Patent Office refusals. Applicants may need to show that the problem arises from computer functioning, not human behaviour. They may also need to prove that the claimed method changes how the computer operates. The decision therefore strengthens the Indian exclusion for computer programs per se. It also keeps open the door for genuine CRI patents.

J) REFERENCES

a) Important Cases Referred

1. Blackberry Limited v. Controller of Patents and Designs, 2026:DHC:3668.
2. Ferid Allani v. Union of India & Ors., 2019 SCC OnLine Del 11867.
3. Microsoft Technology Licensing, LLC v. Assistant Controller of Patents and Designs, 2023:DHC:3342.
4. Microsoft Technology Licensing LLC, One Microsoft Way v. Assistant Controller of Patents, Patent Office, 2024 SCC OnLine Mad 2785.
5. Cipla Ltd. v. F. Hoffmann-La Roche Ltd. & Anr., 2015:DHC:9674-DB.
6. Enercon (India) Limited v. Aloys Wobben, Order No. 123/2013 in ORA/08/2009/PT/CH.
7. Raytheon Company v. Controller General of Patents and Designs, 2023:DHC:6673.
8. Halliburton Energy Services Inc’s Patent Application, [2011] EWHC 2508 (Pat).
9. Vincent Panikurlangara v. Union of India, (1987) 2 SCC 165.
10. Dr. Shivarap Shantaram Wagle v. Union of India, (1988) 2 SCC 115.
11. Blackberry Limited v. Assistant Controller of Patents and Designs, 2024:DHC:6571.
12. Blackberry Limited v. Assistant Controller of Patents and Designs, 2024:DHC:6572.

b) Important Statutes Referred

1. The Patents Act, 1970.
2. Section 2(1)(j), Patents Act, 1970.
3. Section 2(1)(ja), Patents Act, 1970.
4. Section 3(k), Patents Act, 1970.
5. Section 11A, Patents Act, 1970.
6. Section 15, Patents Act, 1970.
7. Section 77(1)(f), Patents Act, 1970.
8. Section 117A, Patents Act, 1970.
9. The Patent Rules, 2003.
10. Article 52(2)(c), European Patent Convention.