Revocation

July 11, 2025
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A Weighty Dispute: Novo Nordisk’s Semaglutide Patent Clash in Delhi High Court

Introduction A major patent battle [1] has erupted in India between pharmaceutical giants Novo Nordisk and Dr. Reddy’s Laboratories over the popular weight loss and diabetes drug semaglutide. Novo Nordisk sued Dr. Reddy’s for manufacturing and exporting its patented drug without consent. This case is significant for the Indian pharmaceutical industry, as its outcome will […]

June 9, 2025
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When Coverage Isn’t Disclosure: DelhiHC’s Denies Interim Injunction forRisdiplam

Introduction On March 25, 2025, the Delhi High Court denied the request of F. Hoffmann-La Roche AG for an interim injunction against Natco Pharma in a high-stakes pharmaceutical patent dispute in F. Hoffmann-La Roche Ag & Anr. vs Natco Pharma Limited [1]1. At issue was Roche’s species patent on “Risdiplam,” a life-saving drug for Spinal […]

April 16, 2025
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Sufficiency of Disclosure – A Statutory Requirement not to be Weighed Less

Introduction Sufficiency of disclosure is a core requirement in patent law, ensuring that an invention is described in a manner that allows a person skilled in the art to perform it. In return for the limited monopoly granted by a patent, the inventor must disclose the invention clearly, enabling public use once the patent expires. […]

February 11, 2025
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Impact of Patent Expiry and Legal Actions on Revocation: A Case Study

Introduction Patents grant exclusive rights to inventors for a specific period, but this exclusive right can be contested if a party believes that the patent was erroneously granted. The Indian Patents Act of 1970 (“Act”) provides the mechanisms for challenging the validity of patents through revocation petitions. One of the primary concerns is whether certain […]