What is Anti-takeover Defense?

Legal Definition
A legal or structural tactic adopted by a company in order to protect it from being acquired by another company. Defenses may be used in conjunction with, or as a substitute for, ANTITAKEOVER LAWS. Also known as PORCUPINE PROVISION, SHARK REPELLENT. See also BLANK CHECK PREFERRED, POISON PILL, SCORCHED EARTH DEFENSE, STAGGERED BOARD.