Bates numbering is a method of numbering sheets of a legal document using a bates stamp device which automatically increases the page number with each use of the device. It provides identification, protection, and auto-increment numbering of the images.
http://definitions.uslegal.com/b/bates-numbering/
Bates numbering (also known as Bates stamping, Bates branding, Bates coding or Bates labeling) is used in the legal, medical, and business fields to place identifying numbers and/or date/time-marks on images and documents as they are scanned or processed...
https://en.wikipedia.org/wiki/Bates_numbering
Bates stamping is the process of applying a set of identifying numbers to a document collection of PDFs to label and identify them.
http://help.lexisnexis.com/litigation/ac/cm/cm10/cm_bates_st...

Nu stiu cum arata - pe documentul tradus de dvs. - aceasta "stamp" - poate ar merge si altceva in afara de "stampila", daca nu e vorba despre o stampila (de ex. Număr oficial de identificare)