Appeal No. 1999-0227 Application No. 08/722,414 software application enabling interaction between users sharing a “virtual environment” via an interconnecting network, and comprises the step of transmitting a change of a state of the application of a specific user to other users “dependent on respective relative distances in the virtual environment between the specific user and each respective one of the other users.” Independent claim 5 is directed to a data processing system enabling interaction between users in a virtual environment and having a server operating in accordance with the distance requirement stated above, and independent claim 8 to a multi-user program enabling interaction in a virtual environment and operative in the same fashion. The examiner has rejected all of these claims as being anticipated by Mallinckrodt. We share the appellant’s opinion that this is not the case because two features are lacking in the reference. The first is that the claims are directed to users operating in a “virtual environment,” that is, an artificial environment which is experienced through sensory 4Page: Previous 1 2 3 4 5 6 7 NextLast modified: November 3, 2007