Lex Vigilantibus, Non Dormientibus, Subvenit Law and Legal Definition

Lex vigilantibus, non dormientibus, subvenit is a Latin maxim that means the law aids the vigilant and not the sleepy. Equity aids only the vigilant, not the indolent. As a result, equity will not encourage a person who sleeps on his/her rights. When a person wishes to receive aid from the equity courts, s/he should be prompt in applying them. This will come under doctrine of laches.