BRUSSELS, May 22 (Reuters) - Apple ( AAPL ) has

challenged at Europe's second-highest court a 1.84 billion euro

($2 billion) fine imposed by EU antitrust regulators for

impeding Spotify ( SPOT ) and other streaming rivals via

restrictions on its App Store, according to a court filing.

Apple ( AAPL ) had already said it would appeal after the European

Commission handed down the fine in March, its first ever penalty

for infringing EU antitrust rules and the third biggest penalty

meted out to a company for anti-competitive behaviour.

A ruling by the Luxembourg-based General Court could take

several years while an appeal against its judgment to the Court

of Justice of the European Union, Europe's top court, could drag

out the litigation by a few more years.

($1 = 0.9228 euros)