Collocations for litigation - noun

costly, expensive | endless, lengthy, protracted | threatened | pending | ensuing, subsequent | civil, commercial, criminal

be/become/get involved in, be engaged in, conduct, engage in | threaten | avoid
The payment was made to avoid threatened litigation.

costs

~ against
He engaged in endless litigation against the media.

~ between
litigation between private parties

the cost of litigation, the risk/threat of litigation