Article 4

1. Where the parties are not competing undertakings, the exemption provided for in Article 2 shall apply for the duration of the research and development. Where the results are jointly exploited, the exemption shall continue to apply for 7 years from the time the contract products or contract technologies are first put on the market within the internal market.

2. Where two or more of the parties are competing undertakings, the exemption provided for in Article 2 shall apply for the period referred to in paragraph 1 of this Article only if, at the time the research and development agreement is entered into:
(a) in the case of research and development agreements referred to in point (a)(i), (ii) or (iii) of Article 1(1), the combined market share of the parties to a research and development agreement does not exceed 25 % on the relevant product and technology markets; or
(b) in the case of research and agreements referred to in point (a)(iv), (v) or (vi) of Article 1(1), the combined market share of the financing party and all the parties with which the financing party has entered into research and development agreements with regard to the same contract products or contract technologies, does not exceed 25 % on the relevant product and technology markets.

3. After the end of the period referred to in paragraph 1, the exemption shall continue to apply as long as the combined market share of the parties does not exceed 25 % on the relevant product and technology markets.