Judge Throws Out State and Federal Cases Against Facebook

In a stunning setback to regulators’ efforts to break up Facebook, a federal judge on Monday threw out antitrust lawsuits brought against the company by the Federal Trade Commission and more than 40 states.

The judge, James E. Boasberg for the U.S. District Court for the District of Columbia, said that the case from the states needed to be dismissed because too much time had elapsed since the alleged offenses took place. The states, led by Letitia James, the New York attorney general, accused Facebook in December of buying up nascent competitors like Instagram and WhatsApp — deals made in 2012 and 2014 — to cement its monopoly over social networking.