Google faced a big setback Thursday in its attempt to overturn a multibillion-dollar European Union antitrust penalty involving Android after a top court's legal adviser sided with regulators. The European Court of Justice's advocate general,

Alphabet's Google faced a potential setback on Thursday as an adviser to Europe's highest court sided with EU antitrust regulators in the company's fight against a record 4.34 billion euro ($4.98 billion) fine levied seven years ago.

A top adviser to the EU’s highest court backed the penalty imposed by EU antitrust regulators, in a blow to Google’s yearslong battle against the fine.