IPR Details
Jim Fenton's Statement about IPR related to draft-ietf-dcrup-dkim-crypto belonging to Cisco Technology Inc.

Submitted: May 29, 2018 under the rules in RFC 8179

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.

Updates

Updates

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

Previous (#3025)This (#3199)
Cisco Technology Inc. Holder legal name Cisco Technology Inc.

II. Contact Information for the IETF Participant Whose Personal Belief Triggered this Disclosure

Previous (#3025)This (#3199)
Jim Fenton Name Jim Fenton
fenton@bluepopcorn.net Email fenton@bluepopcorn.net

Other info

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

Previous (#3025)This (#3199)
Internet-Draft: draft-ietf-dcrup-dkim-crypto ("A new cryptographic signature method for DKIM")
Revisions: 02
Internet-Draft: draft-ietf-dcrup-dkim-crypto ("A new cryptographic signature method for DKIM")
Revisions: 00-06
Sections: 4 (in 00-03); 3 (in 04-06)

IV. Disclosure of Patent Information i.e., patents or patent applications required to be disclosed by RFC 8179

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

Previous (#3025)This (#3199)

US Patent 7,437,558B2, "Method and system for verifying identification of an electronic mail message," contains claims relating to the use of key fingerprints obtained from a "key registration server" to verify the validity of a cryptographic signature whose public key is included in an email message. It is possible that the publication of DKIM key fingerprints in DNS records that is proposed in this draft is covered by this patent.

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

Date: 2004-06-01
Notes: The submitter of this IPR disclosure believes that this patent no longer relates to this draft or resulting RFC, due to the deletion of the relevant section in the -07 revision of the draft.

US Patent 7,437,558B2, "Method and system for verifying identification of an electronic mail message," contains claims relating to the use of key fingerprints obtained from a "key registration server" to verify the validity of a cryptographic signature whose public key is included in an email message. It is possible that the publication of DKIM key fingerprints in DNS records that is proposed in this draft is covered by this patent.
Title: Method and system for verifying identification of an electronic mail message
Number: US7437558
Inventor: James L. Fenton, Michael A. Thomas, Frederick J. Baker

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

Previous (#3025)This (#3199)
No Has patent pending No

V. Contact Information of Submitter of this Form

Previous (#3025)This (#3199)
Jim Fenton Submitter name Jim Fenton
fenton@bluepopcorn.net Submitter email fenton@bluepopcorn.net

VI. Other Notes

Previous (#3025)This (#3199)

I am a co-inventor on this patent, but am no longer affiliated with the patent assignee.

Additional notes

I am a co-inventor on this patent, but am no longer affiliated with the patent assignee.

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