DP act is non- cognizable. Even tehn without investigations, with mere statment of wife or her family's police will file FIR. That is fate.
Usually, Husband side wont try to put reverse cases in the initial stages. Be it DP, DV by husband mother on wife's parents, HMA act for maintainance etc. THey usually concentrate on fighting and clearing the mess up and not to make more mess up in the life. Many people wont even go for damage claim, defamation etc even after they win their cases. Worst is, in one of the case recently concluded 2 weeks back in karnataka, District judge gave jail term for a professor for taking dowry. That professor did not even put the reverse case.
Usually cases are filed in combination with dp, dv, 498a etc. Also dp3 and dp4 are combined and put, in which case it will be like you taken dowry before marriage and you are harrassing her to get more dowry.
Also there is confusion over what amounts to dowry. Whether money given to purchase marriage costumes, choutry, Honeymoon expenditure, gold, etc amounts to dowry or not only experts should comment.
In nut shell, both you and you wife can file dp3 on each other and families. But Law is taken for granted by the females. Also law has given them lot of lineancies.
Two ways to fight divorce and related cases. 1. Do tit for tat 2. Just clean up the mess.
Advice: Play Clever. During reconciliation meeting happening in your community side, give a strong message that dowry taking ang giving both are crime. Use as much grapevine channels as possible to spread this and reach your wife side. Message should be strongly delivered. With this you can avoid the dowry case.