IPR Details
Philip R. Zimmermann's statement about IPR claimed in draft-zimmermann-avt-zrtp-03.txt

Submitted: March 9, 2007 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")

Holder legal name Philip R. Zimmermann

II. Patent Holder's Contact for Licence Application

Holder contact name Philip Zimmermann
Holder contact email prz@mit.edu
Holder contact info

Menlo Park, CA 94025 USA
T: +1 650 322-7223

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

Name Philip Zimmermann
Email prz@mit.edu
Other info

T: +1 650 322-7223

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

Internet-Draft: draft-zimmermann-avt-zrtp ("ZRTP: Media Path Key Agreement for Unicast Secure RTP")
Revisions: 03

V. 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:

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

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending Yes

VI. 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

In relation to an IETF standard based on the ZRTP Specification ("ZRTP
Technology"), Philip Zimmermann (together with his successors and assignees,
"PRZ") will grant a royalty-free, non-exclusive license with reciprocity to
Qualified Parties to use the ZRTP Technology solely to the extent necessary to
implement and practice such IETF standards that are in compliance with the ZRTP
Specification. As used herein, Qualified Parties means a party who has not,
does not and will not assert, in litigation or otherwise, including in licensing
discussions, any patent or other intellectual property right against PRZ of any
nature, or assert the same against any licensee of the libZRTP SDK in connection
with such licensee's implementation or practice of any IETF standard
incorporating the ZRTP Technology. Any license to a Qualified Party shall
terminate at once if such party: (a) asserts a patent or other intellectual
property right against PRZ or any licensee of the libZRTP SDK as set forth
above; or (b) if applicable, fails to properly implement the disclosure flag
described in the ZRTP Specification in a truthful manner. PRZ will grant
non-exclusive licenses to Non-Qualified Parties on reasonable and reciprocal
terms and conditions. For further information, see

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.

VII. Contact Information of Submitter of this Form

Submitter name Philip Zimmermann
Submitter email prz@mit.edu

VIII. Other Notes

Additional notes

For further information, see http://philzimmermann.com/zfone

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