Natco Pharma’s stock jumped sharply on Friday after the Delhi High Court gave the company the go-ahead to sell its version of Risdiplam , a drug used to treat spinal muscular atrophy (SMA), in India. The decision came after the court dismissed an appeal filed by the Swiss drugmaker Roche, which had sought to stop Natco from launching the medicine. Court Decision and Background The dispute began when Roche claimed exclusive rights to Risdiplam  under its patent. Earlier this y