Acquiescence is a legal doctrine that occurs when a party knowingly accepts or tolerates an infringement of their rights without taking action to enforce those rights. This passive acceptance can limit their ability to later assert those rights in court, essentially suggesting that by remaining silent or inactive, they are giving implicit permission for the infringing behavior. This concept often intertwines with other doctrines such as laches and estoppel, affecting how parties navigate disputes, especially in trademark cases and domain name conflicts.