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IPR Details
Mitsubishi's patent statement pertaining to MISTY

The text of the original IPR disclosure is available in the disclosure history.

Submitted: June 8, 2001 under the rules in RFC 2026.

Note: Updates to IPR disclosures must only be made by authorized representatives of the original submitters. Updates will automatically be forwarded to the current Patent Holder's Contact and to the Submitter of the original IPR disclosure.

I. Patent Holder/Applicant ("Patent Holder")

Holder legal name Mitsubishi Electric Corpo

II. Patent Holder's Contact for License Application

Holder contact name Suketaka Tachibana
Holder contact email
Holder contact info

General Manager
Corporate Licensing Department

III. IETF Document or Other Contribution to Which this IPR Disclosure Relates

RFC2994 ("A Description of the MISTY1 Encryption Algorithm")

IV. Disclosure of Patent Information
i.e., patents or patent applications required to be disclosed by RFC 2026

A. For granted patents or published pending patent applications, please provide the following information:

Patent, Serial, Publication, Registration, or Application/File number(s)


B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending No

V. Licensing Declaration

The Patent Holder states that its position with respect to licensing any patent claims contained in the patent(s) or patent application(s) disclosed above that would necessarily be infringed by implementation of the technology required by the relevant IETF specification ("Necessary Patent Claims"), for the purpose of implementing such specification, is as follows(select one licensing declaration option only):

Licensing See Text Below for Licensing Declaration
Licensing information, comments, notes, or URL for further information

On condition that other company and/or entity shall grant their patents
essentially required to IETF standards under fair and commercially
reasonable terms and conditions on non-discriminatory basis in
accordance with the RFC 2026 policy, Mitsubishi hereby declares that it
is prepared to grant, on the basis of reciprocity and non-
discriminatory, a royalty-free license under the Patents to an
unrestricted number of applicants on a world-wide, with other fair and
reasonable terms and conditions to manufacture, use and/or sell
implementations of the above RFC2994, provided that, Mitsubishi shall
reserve any and all rights to enforce the Patents against any applicant
in the event that such applicant asserts any patents related to
cryptographic technology which are essential to products having MISTY1

Note: The individual submitting this template represents and warrants that he or she is authorized by the Patent Holder to agree to the above-selected licensing declaration.

VI. Contact Information of Submitter of this Form

Submitter name Eishi Furukawa
Submitter email

VII. Other Notes

Additional notes

Please contact to "" for more information and/or license.

Only those sections of the relevant entry form where the submitter provided information are displayed above.