the documents relating to the exclusion of or objections to members of the Boards of Appeal or of the Enlarged Board of Appeal;
draft decisions and notices, and all other documents, used for the preparation of decisions and notices, which are not communicated to the parties;
the designation of the inventor, if he has waived his right to be mentioned under Rule 20, paragraph 1;
any other document excluded from inspection by the President of the European Patent Office on the ground that such inspection would not serve the purpose of informing the public about the European patent application or the European patent.
See the decision of the President of the EPO dated 12.07.2007, Special edition No. 3, OJ EPO 2007, J.3. and the decision of the President of the of the EPO dated 14.02.2018 concerning online file inspection of documents contained in the file held by the EPO as receiving Office, International Searching Authority or Authority specified for supplementary search (OJ EPO 2018, A14).