MERCK SHARP & DOHME CORP. & ANR. vs RANVIR KUMAR BINDESHWARI SINGH & ORS.

* IN THE HIGH COURT OF DELHI AT NEW DELHI % Judgment reserved on: 15.01.2026 Judgment delivered on: 23.01.2026 CS(COMM) 1075/2018, I.A. 10890/2018, I.A. 15200/2018, I.A. 11751/2022 & I.A. 188/2025 MERCK SHARP & DOHME CORP. & ANR. .....Plaintiffs versus RANVIR KUMAR BINDESHWARI SINGH & ORS. ....Defendants Advocates who appeared in this case: For the Plaintiffs : Mr. Pravin Anand, Ms. Tusha Malhotra and Ms. Sugandha Yadav, Advocates. For the Defendants : None. CORAM: HON'BLE MR. JUSTICE TUSHAR RAO GEDELA JUDGMENT TUSHAR RAO GEDELA, J. 1. The present suit has been filed seeking a decree of permanent injunction to restrain the defendants from infringement of registered Patent no.209816, damages, rendition of accounts, delivery up and costs. 2. The facts as stated in the plaint are that Plaintiff no.1, Merck Sharp & Dohme Corp., is the owner of the Indian Patent No.209816 (hereinafter referred to as ‘the suit patent’) that covers, amongst other molecules, a molecule having an International Non-Proprietary Name (INN), SITAGLIPTIN, which has the following chemical structure:- 3. It is stated that the said molecule was invented by the plaintiff no.1, which holds patents for the same in 102