The agreement to acquire Dublin-based Actavis' operations was announced in January 2014.
"Following receipt of clearances from competent authorities, Aurobindo intends to combine the strength of both enterprises in these markets and to identify and maximise all opportunities to improve performance," Aurobindo said in a statement.
Actavis and Aurobindo have also entered into a long term commercial and supply arrangement, it added.
Commenting on the development, Aurobindo SVP of European Operations V Muralidharan said: "The acquisition will make Aurobindo one of the leading Indian pharmaceutical companies in Europe."
Aurobindo has acquired personnel, commercial infrastructure, products, marketing authorisations and dossier licence rights in seven European countries.