"Adversarial proceedings" are legal situations where two or more parties are in conflict with each other and present opposing arguments or evidence to a judge or jury to try and win their case. Full definition
Collaborative professionals in a collaborative case may not participate in adversarial proceedings in court involving those parties in the engagement. (collaborativepros.com)
He also advises on cybersecurity issues in the context of adversarial proceedings and dispute resolution. (orrick.com)
It describes a variety of problem - solving processes that are used in lieu of litigation or other adversarial proceedings to resolve disagreements. (transportation.gov)