ADJ. costly, expensive | endless, lengthy, protracted | threatened | pending | ensuing, subsequent | civil, commercial, criminal
VERB + LITIGATION be/become/get involved in, be engaged in, conduct, engage in | threaten | avoid The payment was made to avoid threatened litigation.
LITIGATION + NOUN costs
PREP. ~ against He engaged in endless litigation against the media. | ~ between litigation between private parties
PHRASES the cost of litigation, the risk/threat of litigation