Mahindra Satyam will be only a go-to-market brand, while the company's name stays the same, a Satyam spokesman said on Sunday.
Tech Mahindra, an outsourcing company of India's Mahindra Group, has acquired a 31 percent stake in Satyam. Tech Mahindra made the acquisition through a wholly owned subsidiary called Venturbay Consultants.
Tech Mahindra and Venturbay also made an open offer earlier this month to buy 20 percent more of the equity in Satyam from existing shareholders.
Satyam was plunged into a crisis in January after the company's founder, B. Ramalinga Raju, stated that the company had inflated profits for several years.
A new board, appointed by the government in January, decided to auction off a majority share in the company to a strategic investor, and selected Tech Mahindra as the highest bidder.