What is "countersuing"

Usage examples of "countersuing".

Meanwhile developer owner Martin Margulies and the bank that loaned him the dough are suing and countersuing each other over why the loans aren't being repaid.

Madelaine had papers prepared as well, countersuing Champlain for legal harassment.

But the address, if it ever existed, never was sent, which made me sad, there was so much I wanted to write her: that I'd sold two stories, had read where the Trawlers were countersuing for divorce, was moving out of the brownstone because it was haunted.

Fat Jack had spent tens if not hundreds of thousands of dollars fighting them in the courts, paying fines, being sued, countersuing, and he had even spent time in jail for contempt of court.