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IP Lex · Indian IP case law

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Judgments of the Supreme Court and the High Courts on patents, trade marks, copyright, designs and geographical indications — organised by Act and section, each with a link to the judgment on the court’s website.

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· Section 15 · patents-act-1970

Patents

Deepak Nitrite Limited v. The Assistant Controller General of Patents and Designs

Bombay High Court · Commercial Miscellaneous Petition No. 107 of 2025

It is wholly impermissible for the Controller, while exercising quasi-judicial powers under Section 15, to rely upon 'common general knowledge' as a self-sufficient ground for refusing a patent application without setting out and …

Common General KnowledgeFood Grade Sodium NitriteFree-FlowingImpurity Profile
Patents

Microsoft Technology Licensing, LLC v. The Assistant Controller of Patents and Designs

Delhi High Court · 2023:DHC:3342

An invention is not excluded under Section 3(k) merely because it is implemented as an algorithm on a computer; the determinative question is whether the claimed subject matter demonstrates a technical effect or technical contribu…

Computer Related InventionsPatent ProsecutionSection 3(k)Software Patent
Patents

OpenTV Inc. v. The Controller of Patents and Designs & Anr.

Delhi High Court · 2023:DHC:3305

The exclusion of business methods under Section 3(k) is absolute and unqualified, unlike the per se qualification applicable to computer programmes; the true nature of a claim is determined by its substance rather than its form or…

Business MethodClaim AmendmentComputer Related InventionsSection 3(k)
Patents

Raytheon Company v. Controller General of Patents and Designs

Delhi High Court · C.A.(COMM.IPD-PAT) 121/2022

Novel hardware is not a prerequisite for the patentability of a computer-related invention under Section 3(k) of the Patents Act; the applicable test is whether the claimed invention involves a technical advancement and provides a…

Computer Related InventionsPatent ProsecutionSection 3(k)Software Patent