unaware of police complaint against me

The complaint before CAW Cell stated to have been filed 4 years before without investigation is presumed to be closed, which may be as non-cognizable, however, it can be opened at this stage.

It is better to consult and engage a local prudent lawyer for appreciation of facts / documents, professional advise and necessary proceeding.
 

First, file RTI Application and seek copies of such complaints from the Police and CAW, as you are an alleged victim of false complaints, prepare for collecting that evidence which establishes that the allegations in the complaints are false.  As you are residing in a  DD Flat owned by your father, and your mother is having a GPA and residing separately in Govt quarters for 2+ years, you need not worry about the pending complaints, for which no action was taken by CAW/Police.  The presumption is those were directed to bring threats on you and your wife for your wife not bringing Dowry, and complaints might have been considered as 'Civil disputes" on the property and the authorities may not be having jurisdiction to admit complaints.

Admittedly, you have no notice of the alleged complaint. As such the averment made in the legal proceedings is of no evidentiary value.

By the way, what is the "legal battle" you are referring to and how it is made use of.