The Hyderabad-based pharmaceutical company did not specify a deal value or the stake Advent would acquire. : Private equity major Advent International will buy a "significant" stake in Suven Pharmaceuticals Ltd from its promoter Jasti family and consider merging it with a peer in its portfolio, the Indian drugmaker said on Monday. Suven did not specify a deal value or the stake Advent would acquire but said the private equity firm would also make an additional open offer for around 26% of the outstanding equity shares held by public shareholders.