Any supplementary technical information submitted after the filing date of the application will be added to the part of the file which is open to public inspection, unless excluded from public inspection pursuant to Rule 144(d). From the date on which the information is added to the open part of the file, it forms part of the state of the art within the meaning of Art. 54(2). In order to notify the public of the existence of such information submitted after the application was filed and not included in the specification, an appropriate mention will be printed on the cover page of the patent specification.