Criminal case

A father can file a case for her pregenant girl any time . 

option 1 . By testing the DNA of the child that is born and matching it with the father .

option 2. you can file IPC 376 Rape .

But better you be clear with your query as to what exactly you want . ? and tell the whole story for people to under stand and give their feed back .

vague                           

is ti same case

https://www.lawyersclubindia.com/experts/Girl-pregnant-633566.asp

without facts.