++++ 1 . Common commercial policy - Protection against dumping - Review procedure - Modification of measures previously adopted - Infringement of the principle of legal certainty - None ( Council Regulation No 2176/84, Art . 14(3 ) ) 2 . Common commercial policy - Protection against dumping - Dumping margin - Determination of the normal value - Imports from countries not having a market economy ( Council Regulation No 2176/84, Art . 2(5 ) ) 3 . Common commercial policy - Protection against dumping - Injury - Factors to be taken into consideration - Several - Discretion of the institutions - Decline in the market share of dumped imports - Not decisive ( Council Regulation No 2176/84, Art . 4(2 ) ) 4 . Common commercial policy - Protection against dumping - Conduct of the investigation - Right to meetings with opposing parties - Parties directly concerned - Concept ( Council Regulation No 2176/84, Art . 7(6 ) ) 5 . Common commercial policy - Protection against dumping - Anti-dumping duty applicable to products from the German Democratic Republic - Protocol on German internal trade - No collection of duty on products imported into the Federal Republic of Germany - Infringement of the prohibition of discrimination in relation to importers established in the other Member States - None ( EEC Treaty, Protocol on German internal trade; Council Regulation No 2176/84 )