The case is separate to the 115 charges facing City under Premier League rules, which they allegedly breached by failing to provide accurate financial information over a nine-year period.
The club launched legal action against the associated party transaction (APT) rules earlier this year on the grounds they were anti-competitive.
On Monday, City released a statement saying the tribunal had declared the APT rules "unlawful" and that the league had abused a dominant position under competition law.
They added: "The tribunal has determined both that the rules are structurally unfair and that the Premier League was specifically unfair in how it applied those rules to the club in practice."
The Premier League said the majority of City's challenges in the case were "rejected" but added: "The tribunal did, however, identify a small number of discrete elements of the rules which do not, in their current form, comply with competition and public law requirements.
"These elements can quickly and effectively be remedied by the League and clubs."___
The club who leaked confidential information relating to a legal case between Manchester City and the Premier League has reportedly been uncovered.
Pep re: transfer window: “I think many things are going to happen..."
Sounds like there might be some more departures! I just hope Bernardo decides to stay - hard to think of any player in the world which could replace him.
Rodrigo named Champions League Player of the Season
Rodrigo has been chosen as the Player of the Season for the 2022/23 UEFA Champions League.
Our No.16 was at the heart of our success, playing 12 of the 13 matches and scoring the winner in Saturday's final
UEFA's Technical Observer panel have now chosen the midfielder as the best player in this year's tournament.
It comes less than 24 hours after he collected his winner's medal at the Ataturk Olympic Stadium in Istanbul after a cool second half finish saw us beyond Inter.
That was his second goal of the competition, after a brilliant curling effort in the home leg with German giants Bayern Munich.
The Spain international played more passes than anyone else throughout the campaign, completing 905 of his 965 passes.
Everyone at Manchester City congratulates Rodrigo on the recognition for an incredible season.
Manchester City: Champions of Europe
A 1-0 win over Inter at the Ataturk Stadium in Istanbul sealed the success on a glorious night for the football club.
