History for IPR disclosure
Toshiba Intellectual Property Rights Notice for MPLS (Multiprotocol Label Switching)

From: http://www.ietf.org/ietf-ftp/IPR/toshiba-general-mpls.txt

Title: Toshiba's statement about IPR claimed in MPLS
Received: April 2, 2003
From: Taisuke Kato

Toshiba Patent Policy for MPLS

Toshiba believes it may have patents which relate to compliant
implementations of IETF RFC's in the area of MPLS (Multiprotocol
Label Switching).

In support of IETF intellectual propert rights procedures, Toshiba
is willing to offer non-exclusive licenses, upon written request
from implemenaters of MPLS, under reasonable and non-discriminatory
terms and conditions, when there is necessary dependence upon
Toshiba patents to implement MPLS.

Patents which may be necessary, in compliant implementations of
MPLS, include the following:

Toshiba U.S. Patent 6,343,322 (IP over ATM Systems Using Control
Messages to Set Up Cut-Through Paths or Bypass Pipes in Routers,
issued January 29, 2002, Nagami et al);

Toshiba U.S. Patent 6,147,989 (ATM Communication System with High
Speed Connection-less Service Function, issued November 14, 2000,
Esaki et al);

Toshiba U.S. Patent 6,304,577 (Node Apparatus and Method of Using
a Virtual Connection to Transit a Packet, issued October 16, 2001,
Nagami et al);

Toahiba U.S. Patent 6,341,127 (Node Device and Method for Controlling
Label Switching Path Set Up in Inter-Connected Networks, issued
January 22, 2002, Katsube et al);

Toahiba U.S. Patent 5,822,319 (Router Device and Datagram Transfer
Method for Data Communication Network System, issued October 13,
1998, Nagami et al); and

Toshiba has additional patents and pending applications which may
be related to MPLS, and is willing to provide the terms of licensing
of its intellectual property related to MPLS upon appropriate written
notice.

Any party wishing to request a license should write to:

General Manager
Intellectual Property Division
Toshiba Corporation
1-1 Shibaura 1-chome
Minato-ku
Tokyo 105-8001, JAPAN