WASHINGTON (Reuters) - A U.S. appeals court on Thursday blocked the Federal Communications Commission's reinstatement of landmark net neutrality rules, saying broadband providers are likely to succeed in a legal challenge.

The FCC voted in April along party lines to reassume regulatory oversight of broadband internet and reinstate open internet rules adopted in 2015 that were rescinded under then-President Donald Trump.

The Sixth Circuit U.S. Court of Appeals, which had temporarily delayed the rules, said on Thursday it would temporarily block net neutrality rules and scheduled oral arguments for late October or early November on the issue.