"We confirm that this is regarding a decision from the 6th US Circuit Court of Appeals in a class action lawsuit by some former employees of our US subsidiary company in US following the shut down of company's subsidiary's Michigan facility," the company said in a BSE filing.
It said "there is no material impact of the said judgement on the operations/performance of the company".
In May last year, Sun Pharma had announced that it was closing the Detroit plant, which belongs to its subsidiary Caraco Pharmaceutical Laboratories as part of a manufacturing consolidation process in the US.
Meanwhile, the company has in March this year completed its USD 4 billion acquisition of homegrown rival Ranbaxy.
Shares of Sun Pharma ended the day at Rs 884.95 ascrip on BSE, down by 2 per cent.