# TAPAS CHATTERJEE vs ASSISTANT CONTROLLER OF PATENTS AND DESIGNS & ANR.

Court: Delhi High Court
Date: 2025-10-06
Citation: LPA-836/2023 2025:DHC:8824-DB
Petitioner: TAPAS CHATTERJEE
Respondent: ASSISTANT CONTROLLER OF PATENTS AND DESIGNS & ANR.

[Official PDF on Delhi High Court website](https://delhihighcourt.nic.in/app/showFileJudgment/CHS06102025LPA8362023_113011.pdf)

## Judgment text (excerpt)

$~ * IN THE HIGH COURT OF DELHI AT NEW DELHI Reserved on: 3 April 2025 Pronounced on: 6 October 2025 LPA 836/2023, CM APPL. 66718/2023, CM APPL. 66719/2023, CM APPL. 66720/2023, CM APPL. 66721/2023 & CM APPL. 66722/2023 TAPAS CHATTERJEE .....Appellant Through: Mr. Pravin Anand, Ms. Prachi Agarwal, Ms. Arpita Kulshrestha and Ms. Elisha Sinha, Advs. versus ASSISTANT CONTROLLER OF PATENTS AND DESIGNS & ANR. .....Respondents Through: Mr. Vijay Joshi, Mr. Kuldeep Singh and Mr. Shubham Chaturvedi, Advs. for R-1 Ms. Vindhya S. Mani, Mr. Ritvik Sharma, Ms. Naina Gupta, Mr. Bhuavan Malhotra, Ms. Surbhi Nautiyal, Ms. Harshita Agarwal, Mr. Devesh Aswal and Ms. Vedika Singhvi, Advs. for R-2 CORAM: HON'BLE MR. JUSTICE C. HARI SHANKAR HON'BLE MR. JUSTICE AJAY DIGPAUL JUDGMENT % 06.10.2025 C. HARI SHANKAR, J. LPA 836/2023 6.1 6 Background of the Invention 6.2 7 Summary of the Invention 6.3 8 Detailed Description of the Invention 6.4.1 – 6.4.5 9 Claims in the subject application 6.5 10 Reference to FER 7 11 Pre-grant opposition of CSIR 8.1 – 8.4 12 Response of appellant to objections of 9 CSIR 13 Findings of the AC 10 14 The Impugned Judgment 11 15 Prior Art Documents D1 and D2 16 Prior Art Docume

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