(Bloomberg) -- Meta Platforms Inc. is asking a judge to force Snap Inc. to hand over data it says is needed to help the Facebook owner defend against a US government antitrust lawsuit. 

In a filing with a federal court in California, Meta said Snap should turn over information it says can help refute the Federal Trade Commission’s contention that it has a monopoly in “personal social networking services.” Meta said it served its subpoena on Snap more than five months ago. Among the data it seeks is the number of Snap users and the amount of time they spend on the app, which it says will help with the assessment of Meta’s market share. 

“After months of delay, Snap has refused to produce the vast majority of the documents Meta has requested,” according to the filing, dated Aug. 2 and posted Wednesday. Snap “has refused to provide critical information about the competitive marketplace (a key issue in this antitrust case); it will not even conduct standard custodial searches for emails and other electronic documents.”

Snap told the court in the filing that the subpoenas should be quashed because they are “overbroad and unduly burdensome.” Meta is seeking “documents from almost every department at the company, relating to every single one of Snap’s products and nearly every aspect of its business,” Snap said. 

The case is Meta Platforms v Snap, 2:22-mc-00146, US District Court for the Central District of California.

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