IPR Details
Hifn's Statement on IPR Claimed in LZS and MPPC compression algorithms

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

Submitted: December 8, 2004 under the rules in RFC 3668

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

II. Patent Holder's Contact for License Application

Holder contact name
Robert C. Friend
Holder contact email
Holder contact info

750 University Ave
Los Gatos, CA 95032

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

RFC3943 ("Transport Layer Security (TLS) Protocol Compression Using Lempel-Ziv-Stac (LZS)")
RFC3078 ("Microsoft Point-To-Point Encryption (MPPE) Protocol")
RFC1967 ("PPP LZS-DCP Compression Protocol (LZS-DCP)")
RFC2395 ("IP Payload Compression Using LZS")
RFC1974 ("PPP Stac LZS Compression Protocol")
RFC2118 ("Microsoft Point-To-Point Compression (MPPC) Protocol")

IV. Disclosure of Patent Information i.e., patents or patent applications required to be disclosed by RFC 3668

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

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

U.S. patent numbers 4,701,745, 5,003,307, 5,016,009, 5,126,739,
5,146,221, 5,414,425, 5,414,850, 5,463,390, 5,506,580, 5,532,694.

B. Does this disclosure relate to an unpublished pending patent application?:

Has patent pending

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):

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

Software licenses for a reference implementation are available for
use in IPPCP, IPSec, PPP, in addition to TLS applications at no cost.

Software licenses are available on a non-discriminatory basis.
Hardware implementations are also available. For more information,
contact Hifn at the address listed with the author's address.

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
Submitter email

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