The Autorité de la concurrence may also decide, under the conditions laid down in Article L. 464-6, that there are no grounds for continuing the procedure where the practices referred to in Article L. 420-1 do not concern contracts awarded pursuant to the Public Procurement Code and where the combined market share held by the undertakings or bodies party to the agreement or practice in question does not exceed either:
a) 10% on one of the markets affected by the agreement or practice where it concerns an agreement or practice between undertakings or bodies which are existing or potential competitors on one of the relevant markets;
b) 15% on one of the markets affected by the agreement or practice where it concerns an agreement or practice between undertakings or bodies which are not existing or potential competitors on one of the relevant markets.