Is there an extra cost for additional users?
No. The license is by number of patent families in the single database licensed. The software and database may be installed on a server, and accessed by any number of users. However, the database may not be installed on more than one computer. Can the software be used on a network? Yes. The software and database may be installed on a server, and accessed by any number of users. However, the database may not be installed on more than one computer/server.