countercase
nounEtymology From counter- + case.
1
A legal case filed in response to another case.
- The European Union and the United States filed countercases in September 2004 over aid to Airbus and Boeing, the only two makers of large commercial aircraft in a $150 billion market.2007 September 27, Bloomberg News, “W.T.O. Hears European Complaint of U.S. Aid to Boeing”, in New York Times: