The phrase "limitation purposes" refers to when something is used or applied in order to set boundaries or restrictions on something else. It means using something for the purpose of defining its limits or constraints. Full definition
As well as differences in the basic periods which apply such as, for example, one year in Spain and 10 years in France, there are a raft of different rules governing questions such as what starts and stops the clock for limitation purposes as well as whether courts have discretion to extend those periods. (trethowans.com)
The proposal advanced by Cuomo and others also would treat public and private institutions alike for statute of limitations purposes; it would end the requirement that initial lawsuit actions commence against public employers within 90 days of an alleged incident — a current law that victims say gives public schools and other public employers an improper legal shield against culpability when one of their workers abuse a child. (buffalonews.com)
In that case a series of regular payments made pursuant to a pay agreement reached on 1 July 1983 were deemed for time limitation purposes to be an act taking place on 1 July 1983, rather than «a series of similar actions» taking place on the date of the last act. (newlawjournal.co.uk)