A computer-implemented method for digitally signing an electronic document by a plurality of signers includes determining a signing role of each signer; identifying a to-be-signed portion of the document corresponding to the signing role of each signer; receiving an indication from each signer to digitally...http://www.google.de/patents/US20040139327?utm_source=gb-gplus-sharePatent US20040139327 - System and method for document-driven processing of digitally-signed electronic documents
