U.S. chipmaker Nvidia has sued EU antitrust regulators for accepting an Italian request last year to scrutinise its acquisition of AI startup Run:ai, saying they had flouted an earlier court ruling restricting their merger powers on minor deals.

Nvidia (NASDAQ:NVDA) has filed a suit against a European Union regulator over what it views was an unnecessary probe into Nvidia's acquisition of Run:ai last year, according to Reuters. Last fall, even though the deal did not meet the notification thresholds set forth by the EU Merger Regulation,