The Delhi High Court, while disposing a patent-appeal by T-Mobile International AG, used the occasion to lay down a comprehensive, step-by-step test for examining objections under Section 3(m) of the Patents Act, 1970. The guidelines clarify how examiners must distinguish pure mental-act claims from inventions that involve physical means, thereby providing much-needed certainty for patentees and practitioners.
Background & Facts
The Dispute
The appellant, T-Mobile International AG and Co. KG, filed patent application No. 468/DELNP/2008 titled “Method and Arrangement for optimising the Operational Times and Cell Change Performance of Mobile Terminals”. The Controller General of Patents, Designs and Trademarks refused the application on 29.12.2016, invoking Section 3(k) and Section 3(m) of the Patents Act, 1970.
Key Facts
- 29.12.2016: Refusal order issued by the Controller General under Sections 3(k) and 3(m).
- 23.07.2026: Appeal hearing date reserved.
- 26.02.2026: High Court remanded the appeal for de novo consideration.
- 20.05.2026: Amicus Curiae Mr. Adarsh Ramanujan submitted an updated report containing draft guidelines.
- 04.08.2026: Final order delivered, guidelines finalized and appeal closed.
- The appeal was filed as C.A.(COMM.IPD-PAT) 149/2022.
Procedural History
- 29.12.2016 - Refusal of patent application by the Controller General.
- [Date of filing of appeal not specified] - Appeal filed before the Delhi High Court (C.A.(COMM.IPD-PAT) 149/2022).
- 26.02.2026 - Court ordered the matter to be remanded for fresh consideration.
- 20.05.2026 - Amicus Curiae submitted updated draft guidelines.
- 04.08.2026 - Court issued the final order, laying down guidelines and closing the appeal.
Parties' Positions
- Appellant (T-Mobile International AG): Contended that the claimed method was a technical solution involving hardware and software, and therefore should not fall within the “mental act” exclusion of Section 3(m).
- Respondent (Controller General of Patents, Designs and Trademarks): Maintained that the claim, when read as a whole, amounted to a mere scheme for performing a mental act and was correctly excluded under Section 3(m) and Section 3(k).
Relief Sought
The appellant sought reversal of the refusal and validation of the patent claim.
The Legal Issue
What precise test must the Patent Office apply to determine whether a claim is excluded as “a mere scheme or rule or method of performing mental act” under Section 3(m) of the Patents Act, 1970, and how should that test be distinguished from the novelty and inventive-step inquiries under Sections 2(1)(j) and 2(1)(ja)?
Arguments Presented
For the Appellant
- Asserted that the claim incorporated physical components (sensors, control units) and produced a tangible technical effect, thus falling outside the scope of Section 3(m).
- Relied on the reasoning in Koninklijke Philips N.V. v. Maj (Retd.) Sukesh Behl & Anr. (2025 SCC OnLine Del 1121) that a method involving physical means and a technical implementation is not a mental-act exclusion.
- Cited Lava International Ltd. v. Telefonaktiebolaget LM Ericsson (2024 SCC OnLine Del 2497) to emphasize that hardware-software interaction defeats the exclusion.
For the Respondent
- Emphasised the literal wording of Section 3(m) - “a mere scheme or rule or method of performing mental act or method of playing game” - and argued that the claim, when construed as a whole, monopolised only a mental process.
- Relied on Robert Bosch Ltd. v. Deputy Controller of Patents & Designs (CMA(PT) 1/2024, order dated 25.03.2025) which held that the objection under Section 3(m) is independent of novelty and inventive-step tests.
- Submitted that the presence of a token physical step (e.g., printing) does not remove the claim from the exclusion, as per the EPO Board of Appeal decisions cited.
The Court's Analysis
The Court began by tracing the legislative history of Section 3(m), noting its insertion in 2002 to align Indian law with international practice and to carve out “mental-act” exclusions akin to Article 52(2)(c) of the European Patent Convention. The provision lists four distinct exceptions, each prefixed by the qualifier “mere”, indicating a narrow scope limited to claims that solely cover mental activities.
"The examination of a claim as to whether it is excluded as “a mere scheme or rule or method of performing mental act” under Section 3(m) shall proceed in accordance with the following steps:"
The Court stressed that the objection under Section 3(m) must be assessed independently of the novelty and inventive-step inquiries. It cannot be conflated with the tests under Sections 2(1)(j) or 2(1)(ja). The Court adopted the approach of the EPO Boards of Appeal, particularly decisions T 914/02, T 619/02 and T 471/05, which require a claim to recite a technical implementation that yields a tangible, non-abstract effect to escape the exclusion.
The Court then laid down a seven-step guideline:
- Construe the claim in light of the specification, without importing limitations.
- Product claims are excluded - a claim directed to a physical apparatus is not a “scheme or method”.
- Identify what is monopolised - consider the claim as a whole; do not dissect into individual steps.
- Apply the exclusion - ask whether the monopoly is nothing more than a mental act; if the claim could be infringed by mere thinking, it is excluded.
- Token additions - a mere reference to a physical step that is not integral does not remove the claim from exclusion.
- No conflation with novelty/inventive step - the mental-act test is separate.
- Separate from Section 3(k) - computer-implemented methods must be examined under Section 3(k), not Section 3(m).
Illustrations (a)-(f) were provided to demonstrate the application of the test, ranging from a pure Sudoku-solving method (excluded) to a fuel-preheating method involving sensors and control units (not excluded).
The Court also noted that the guidelines should be placed before the Controller General within six weeks of receipt of the order, thereby giving the Patent Office a concrete procedural timetable.
The Verdict
The appeal was disposed of on its merits; the Court did not overturn the original refusal but issued binding guidelines for future examination of objections under Section 3(m). The guidelines are to be placed before the Controller General of Patents and Designs, Delhi, within six weeks of receipt of this order. With the guidelines finalised, the appeal is closed.
What This Means For Similar Cases
Independent Test for Section 3(m)
- Practitioners must prepare claim drafts that clearly demonstrate a physical or technical contribution; merely adding a token physical step will not suffice.
- The whole-claim test requires that the monopoly conferred be assessed in its entirety, not by isolating individual mental-act steps.
Physical Means Exclude Mental-Act Exclusion
- Claims that recite integral hardware, sensors, or any apparatus that performs the method will automatically escape Section 3(m).
- The presence of a computer program alone triggers Section 3(k); the claim must then be examined under that provision, not Section 3(m).
No Conflation with Novelty or Inventive Step
- Even if a claim is deemed obvious or trivial, it will only be excluded under Section 3(m) if it is purely a mental act.
- Patent practitioners should therefore separate arguments for novelty/inventive step from those addressing the mental-act exclusion.
