@ Pawan
There is no such thing called a counter case for a case filed u/s 498A howsoever false it may be. Firstly make sure that you and all other accused in the case are enlarged on bail, after that if you have substantial evidence to prove your averments, preserve them for trial of the present case against you,.
Depending on actual facts of your case, you can put many cases like Tax Evasion, DP Act, cheating, fraud, false proofs, defamation and so on. you wll end up spending more time running around courts and on legal fees
If father in law has given dowry pursuant to demands made by your family he is guilty .As section 3 punishes dowry giver too
But I have not seen any success story of DP3 in last 5 years since it came in vogue, almost all FIRs under this section has been quahsed by respective High Courts and even SC upheld the same.
There is no Hard and fast rule for maintanence to be awarded . Normally it is 1/3 rd of your salary and it is at the discretion of the judge and how your Advocate projects the case .If unhappy with the maintenance order passed you would have to go in for an appeal .
@ Helping Hand
No need to lose your Bearings
My reply was in answer to your reply posted on the thread where in you stated to acknowledge that they have taken dowry .