(1) Where the opposition or the action for revocation of a patent is based on the statement that the subject matter of the patent is not patentable under section 3, the German Patent and Trade Mark Office or the Federal Patent Court may require the filing of originals, photocopies or certified copies of documents cited in the opposition or in the action and which are not available at the German Patent and Trade Mark Office and at the Federal Patent Court, with one copy each for the German Patent and Trade Mark Office or the Federal Patent Court and for the parties to the proceedings.
(2) The German Patent and Trade Mark Office or the Federal Patent Court may demand the furnishing of uncertified or certified translations of cited documents in a foreign language.