counterclaimcounterclaim: in civil litigation; a defendant’s claim aga... More: in civil litigationlitigation: the bringing of a lawsuit or legal claim in cour... More; a defendant’s claim against a claimant that is made in the same proceedings as the claimant’s claim. Counterclaims are usually served by the defendantdefendant: the respondent against whom court proceedings are... More or his defence litigationlitigation: the bringing of a lawsuit or legal claim in cour... More solicitor at the same time the defendantdefendant: the respondent against whom court proceedings are... More serves its defence.