Rs 1,965-cr deal helps it rake in 3.5 times its investment within four years.
Pfizer, the world's largest drug company, and Wyeth have sued Daiichi Sankyo-owned Ranbaxy Laboratories in a US court for infringing the patent rights of Wyeth's drug, Rapamune.
Lupin Ltd received US Food & Drug Administration's approval for its abbreviated new drug application for Cefuroxime Axetil tablets.