Sign in
Version 5.3.0, 2014-04-12
Report a bug

Cisco's Statement about IPR Claimed in draft-ietf-tcpm-tcpsecure

This IPR disclosure was submitted by e-mail.

Sections I, II, and IV of "The Patent Disclosure and Licensing Declaration Template for Legacy" have been completed for this IPR disclosure. Additional information may be available in the original submission.

The text of the original IPR disclosure is available further down, and also here:

Update this IPR disclosure. 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.

Submitted Date: May 17, 2004

I. Patent Holder/Applicant ("Patent Holder")
Legal Name: Cisco
II. Patent Holder's Contact for License Application
Name: Robert Barr
Email: <>
III. IETF Document or Other Contribution to Which this IPR Disclosure Relates:
Internet-Draft:"Improving TCP's Robustness to Blind In-Window Attacks"

The text of the original IPR declaration:

Title: Cisco's Statement about IPR Claimed in draft-ietf-tcpm-tcpsecure
Updated: May 17, 2004
From: Robert Barr 

Cisco is the owner of one or more pending patent applications relating to
the subject matter of "Transmission Control Protocol security
considerations" . If technology in this
document is included in a standard adopted by IETF and any claims of any
Cisco patents are necessary for practicing the standard, any party will be
able to obtain a license from Cisco to use any such patent claims under
reasonable, non-discriminatory terms, with reciprocity, to implement and
fully comply with the standard. 

The reasonable non-discriminatory terms are:

If this standard is adopted, Cisco will not assert any patents owned or
controlled by Cisco against any party for making, using, selling, importing
or offering for sale a product that implements the standard, provided,
however that Cisco retains the right to assert its patents (including the
right to claim past royalties) against any party that asserts a patent it
owns or controls (either directly or indirectly) against Cisco or any of
Cisco's affiliates or successors in title for an implementation of any IETF
standard; and Cisco retains the right to assert its patents against any
product or portion thereof that is not necessary for compliance with the

Royalty-bearing licenses will be available to anyone who prefers that

Robert Barr
VP, Intellectual Property
Worldwide Patent Counsel
Cisco Systems