Under present Article 230(4) any natural or legal person have locus standi “against a decision addressed to that person or against a decision which, although in the form of a regulation or a decision addressed to another person, is of direct and individual concern to the former.” Therefore, any person or business can challenge the legality of certain EC acts before the Court of First Instance, if he/she can prove that the act is of “direct and individual concern.”
The criteria of the “individual concern" has been strictly interpreted by the Court. This provision creates difficulties for the individual to enforce their rights and entitlement to an effective remedy. The Lisbon Treaty amended this provision which reads "Any natural or legal person may, under the conditions laid down in the first and second paragraphs, institute proceedings against an act addressed to that person or which is of direct and individual concern to him or her, and against a regulatory act which is of direct concern to him or her and does not entail implementing measures."
Hence, an individual may challenge any act addressed to him, not just decisions. If it is not addressed to the plaintiff, he/she will have to prove that the act is of direct and individual concern. Any natural or legal person may also challenge a regulatory act if no further implementation is required and if he can prove direct concern, there is no need to prove individual concern. This provision liberalises locus standing on regulatory acts. Thus, it will liberalise the rules on standing for actions for annulment of regulatory acts. The Lisbon Treaty provides for a paragraph which provides for “Acts setting up bodies, offices and agencies of the Union may lay down specific conditions and arrangements concerning actions brought by natural or legal persons against acts of these bodies, offices or agencies intended to produce legal effects in relation to them.".