A California court has reversed its decision, and has given preliminary approval to a $1.3 million (€1.2 million) nationwide class action for a lawsuit brought in 2016 against California-based grocery store Trader Joe's for allegedly "cheating customers by under filling 5-ounce cans of Trader Joe’s store-brand tuna."

On Jan. 14 Judge Otis D. Wright of the US District Court for the Central District of California approved the motion, citing as precedent a previous Ninth Circuit ruling for car company Hyundai, where California law could be applied more broadly.

Previously the judge ruled the class action lawsuit against California-based grocery store Trader Joe's and its Boston-based subsidiary Trader Joe’s East Inc on behalf of consumers across at least 40 US states could not establish why all of those states should fall under California consumer protection laws.