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IPR Details
Yahoo! Inc.'s statement about IPR claimed in draft-allman-dkim-base-00.txt

Submitted: September 9, 2005 under the rules in RFC 3979.

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.


Updated by

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

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Yahoo! Inc. Holder legal name Yahoo! Inc.

II. Patent Holder's Contact for License Application

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Ron Bell Holder contact name Joseph Siino
Holder contact email

Deputy General Counsel
Yahoo! Inc.
701 First Avenue, Sunnyvale, CA 94089

Holder contact info

Vice President, Intellectual Property
Yahoo! Inc.
701 First Avenue, Sunnyvale, CA 94089
T: 408-349-3853

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

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draft-delany-domainkeys-base ("Domain-Based Email Authentication Using Public Keys Advertised in the DNS (DomainKeys)")
No revisions for this Internet-Draft were specified in this disclosure. The Internet-Draft's initial submission was after this disclosure was posted. Contact the discloser or patent holder if there are questions about which revisions this disclosure pertains to.
draft-allman-dkim-base ("DomainKeys Identified Mail (DKIM)")

IV. Disclosure of Patent Information
i.e., patents or patent applications required to be disclosed by RFC 3979

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

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

20050039017, 20050039019, WO 2005/026921
Date: 9/24/03, 3/19/04, 3/15/04
Country: US, US, (PCT)

B. Does this disclosure relate to an unpublished pending patent application?:

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Yes 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):

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See Text Below for Licensing Declaration Licensing See Text Below for Licensing Declaration

Yahoo! will grant a royalty-free, worldwide, non-exclusive license
under any Yahoo! patent claims that are essential to implement or use
an Implementation so that licensees can make, use, sell, offer for
sale or import Implementations; provided that the licensee agrees not
to assert against Yahoo!, or any other Yahoo! licensees of
Implementations, any patent claims of licensee that are essential to
implement or use any Implementation.

In addition to the foregoing, please be advised that the term
"DomainKeys" is a trademark of Yahoo!, and Yahoo! has applied for
registration of the mark "DomainKeys". Yahoo! will grant a
royalty-free, non-exclusive trademark license permitting use of the
DomainKeys trademark to refer to products that conform to the
specifications set forth in the Internet-Draft. For example, any
party may state that their product is "DomainKeys compliant, "supports
DomainKeys" or is "DomainKeys-enabled," without citation to
Yahoo!. However, such parties should create their own product names or
trademarks for their specific products and the term "DomainKeys" shall
not be used by any party in or as part of a name for its own products.

Licensing information, comments, notes, or URL for further information

Yahoo! plans to license its Necessary Patent Claims contained in the patent
applications disclosed above under two separate license agreements, one of which
will be a modification of the DomainKeys Patent License Agreement (v1.1), and
the other will be the GNU General Public License (v2).

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

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Submitter name Andrew Chen
Submitter email

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