++++ 1 . Competition - Agreements, decisions and concerted practices - Agreements between undertakings - Concept - Agreements whose purpose is to put an end to litigation ( EEC Treaty, Art . 85 ( 1 ) ) 2.Competition - Agreements, decisions and concerted practices - Effect on trade between Member States - Reciprocal licensing agreements relating to industrial and commercial property rights protected in several Member States ( EEC Treaty, Art . 85 ( 1 ) ) 3.Competition - Agreements, decisions and concerted practices - Adverse effect on competition - Criteria of assessment - No-challenge clause in patent licensing agreement ( EEC Treaty, Art . 85 ( 1 ) )