HELSINN HEALTHCARE SA vs AET LABORATORIES PRIVATE LIMITED & ANR.

Judgment text excerpt

* IN THE HIGH COURT OF DELHI AT NEW DELHI % Judgment Reserved on: 13th August, 2025 Judgment pronounced on: 26th September, 2025 + CS(COMM) 1188/2024 with I.A. 49552/2024, I.A. 49553/2024, I.A. 3729/2025 & I.A. 13451/2025 HELSINN HEALTHCARE SA .....Plaintiff Through: Mr. Jayant Mehta, Senior Advocate with Mr. Neel Mason, Mr. Vihan Dang, Mr. Ujjawal Bhargava, Mr. Aditya Mathur, Ms. Shivani Choudhury, Mr. Aditya Mathur, Ms. Anuparna Chatterjee, Ms. Jasleen Virk and Mr. Pallav Arora, Advocates versus AET LABORATORIES PRIVATE LIMITED & ANR......Defendants Through: Mr. Dayan Krishnan, Senior Advocate with Ms. Meenakshi Ogra, Mr. Tarun Khurana, Mr. Tapan Shah, Mr. Ritvik Jha, Mr. Samrat S. Kang and Mr. Parth Singh, Advocates. CORAM: HON’BLE MR. JUSTICE AMIT BANSAL JUDGMENT AMIT BANSAL, J. I.A. 49552/2024 (u/O-XXXIX Rules 1 and 2 of the CPC) and I.A. 3729/2025 (u/O-XXXIX Rule 4 of the CPC) 1. By way of the present judgment, I shall dispose of I.A. 49552/2024 filed under Order XXXIX Rules 1 and 2 of the Code of Civil Procedure, 1908 (hereinafter ‘CPC’) on behalf of the plaintiff and I.A. 3729/2025 filed under Order XXXIX Rule 4 of the CPC on behalf of the defendants. Signature Not Verified Digitally Signed By:AARZOO CS(COMM) 1188/2024 Page 1 of 22 Signing Date:26.09.2025 16:59:36 2. The present suit has been filed seeking a decree of permanent injunction restraining the defendants from infringement of the plaintiff’s patent IN 426553 titled ‘COMPOSITIONS AND METHODS FOR TREATING CENTRALLY MEDIATED NAUSEA AND VOMITING’ (hereinafter ‘suit patent’). The suit patent concerns an oral dosage form comprising of Netupitant (200 to 400 mg, in particular, 300 mg) and Palonosetron hydrochloride (0.56 mg, which is equivalent to 0.5 mg of Palonosetron) for treating chemotherapy induced naus