in pari causa
in pari causa (in par-Ikaw-z[schwa]), adv. [Latin “in an equal case”] In a case affecting two parties equally or in which they have equal rights (in pari causa, the possessor ordinarily defeats the nonpossessory claimant).
IN PARI CAUSA
in pari causa
in pari causa 〈拉〉 (1)在同等条件下；在权利平等时 如在同等条件下，占有财产者的权利优先于不占有财产者。 (2)有同等过错；同等罪行；同等犯罪 在普通法中，如果原告对违法事件的形成具有同等过错，则对方当事人可以此作为抗辩理由。但反垄断法中一般不承认该项抗辩。 (→unclean hands doctrine)