A single judge of Karnataka High Court held as follows, while quashing false FIR against In-Laws,

From Para 10,

10. There are scores and scores of cases where allegations are made that have pointed overt acts by every member of the family which are sustained and further trial is permitted. There are even scores and scores of cases where every member of the family without rhyme or reason is dragged into the web of crime by frivolous complaints registered by the complainant/wife while the entire grievance is against the husband and every imaginary member of the family is dragged in. It is these cases which are to be nipped in the bud. Bud, I mean, at the stage of registration of the crime, failing which, it would run foul of the judgment of the Apex Court in the case of KAHKASHAN KAUSAR v. STATE OF BIHAR1

Index of Quash judgments is here.