The document discusses various legal mechanisms for enforcing EU law against EU institutions: 1) Article 263 allows EU member states, institutions and individuals to challenge the legality of EU legislative and regulatory acts before the Court of Justice if they infringe treaty rules or procedural requirements. 2) Article 265 allows member states and institutions to bring an action before the Court if EU institutions fail to act and thereby infringe the treaties. 3) Articles 268 and 340 allow individuals to claim damages from EU institutions for breach of EU law if the infringement is sufficiently serious and causes direct loss. However, institutions have some discretion.