Europe’s highest court, the European Court of Justice, has dismissed Google’s final appeal against a record €4.1 billion antitrust fine, legally confirming the penalty for using its Android operating system to cement the dominance of its search engine [1][3]. The ruling concludes a decade-long legal battle in which the court upheld findings that Google illegally tied access to the Google Play Store to mandatory pre-installation of Google Search and Chrome, effectively blocking rivals from mobile devices [1][10]. This decision, which leaves Google with no further right to appeal within the EU judicial system, not only mandates payment of the largest antitrust fine ever issued by the European Commission but also opens the door for 13 European nations to pursue follow-on damages against the tech giant [2][6]. The outcome reinforces strict EU competition rules targeting Big Tech and signals that attempts to leverage dominant mobile platforms to suppress market competition will face decisive legal consequences [2][4].