The Court of Justice may review challenges to Community acts on four grounds:
1- Lack of competence;
2 Violations to procedures set out by the EEC Treaty;
3- Violations of an act to principle law;
4- Misuse of power.
1- LACK OF COMPETENCE
An act of Community institution may be challenged under Art. 230 on grounds of lack of competence(see for example, Germany v EP and Coucil, Case C-367/98.) The Tobacco Advertising case, in which ECJ annulled a decision by the Commission's lack of competence to impose a general ban on tobacco advertising under Art. 95 (ex Art.100, 47(2) (ex 57(2) and 55 (ex66), EEC Treaty.