AT&T Corp/CSI Zeinet(A Cabletron Co.)

AT&T Delaware Intellectual Property Corporation, Inc.

AT&T Deleware Intellectual Property, Inc.

AT&T Intellectual Properties II, L.P.

AT&T Intellectual Property I, LLP.

AT&T Intellectual Property I, LP.

AT&T Intellectual Property II

AT&T Intellectual Property II L.P.

AT&T Intellectual Property LLP

AT&T Intellectual Propery II, L.P.

AT&T Ipm Corp

AT&T Laboratories

AT&T Labs, Inc.

AT&T Property II, L.P.

AT&T Wireless Communications Products Limited

AT&T Wireless Communications Products, Ltd.

AT&T Wireless Sucs. Inc.

AT&TCorp

Atallah Isa B.

Atamaniouk Valeri