56Consequently, in order to apply the exception provided for by the first indent of Article 4(2) of Regulation No 1049/2001, it must be shown that the documents at issue contain elements which may, if disclosed, seriously undermine the commercial interests of a legal person. That is the case, in particular, where the requested documents contain commercially sensitive information relating, in particular, to the business strategies of the undertakings concerned or to their commercial relations or where those documents contain information particular to that undertaking which reveal its expertise (judgment of 9 September 2014, MasterCard and Others v Commission, T‑516/11, not published, EU:T:2014:759, paragraphs 82 to 84).