Article 4 of Regulation (EEC) No 2821/71 shall be amended as follows: 1. The following is inserted at the end of paragraph 1:
"A Regulation adopted pursuant to Article 1 may lay down that the prohibition referred to in Article 85 (1) of the Treaty shall not apply, for the period fixed in the same Regulation, to agreements and concerted practices which existed at the date of accession and which, by virtue of accession, come within the scope of Article 85 and do not fulfil the conditions set out in Article 85 (3)."
2. Paragraph 2 shall be supplemented by the following:
"Paragraph 1 shall be applicable to those agreements and concerted practices which, by virtue of the accession, come within the scope of Article 85 (1) of the Treaty and for which notification before 1 July 1973 is mandatory, in accordance with Articles 5 and 25 of Regulation No 17, only if notification was given before that date."