ZyXEL Communications NSA320 User Manual page 486

Appendix E Open Source Licences
A contributor's "essential patent claims" are all patent claims owned or controlled
by the contributor, whether already acquired or hereafter acquired, that would be
infringed by some manner, permitted by this License, of making, using, or selling
its contributor version, but do not include claims that would be infringed only as a
consequence of further modification of the contributor version. For purposes of
this definition, "control" includes the right to grant patent sublicenses in a manner
consistent with the requirements of this License.
Each contributor grants you a non-exclusive, worldwide, royalty-free patent
license under the contributor's essential patent claims, to make, use, sell, offer for
sale, import and otherwise run, modify and propagate the contents of its
contributor version.
In the following three paragraphs, a "patent license" is any express agreement or
commitment, however denominated, not to enforce a patent (such as an express
permission to practice a patent or covenant not to sue for patent infringement). To
"grant" such a patent license to a party means to make such an agreement or
commitment not to enforce a patent against the party.
If you convey a covered work, knowingly relying on a patent license, and the
Corresponding Source of the work is not available for anyone to copy, free of
charge and under the terms of this License, through a publicly available network
server or other readily accessible means, then you must either (1) cause the
Corresponding Source to be so available, or (2) arrange to deprive yourself of the
benefit of the patent license for this particular work, or (3) arrange, in a manner
consistent with the requirements of this License, to extend the patent license to
downstream recipients. "Knowingly relying" means you have actual knowledge
that, but for the patent license, your conveying the covered work in a country, or
your recipient's use of the covered work in a country, would infringe one or more
identifiable patents in that country that you have reason to believe are valid.
If, pursuant to or in connection with a single transaction or arrangement, you
convey, or propagate by procuring conveyance of, a covered work, and grant a
patent license to some of the parties receiving the covered work authorizing them
to use, propagate, modify or convey a specific copy of the covered work, then the
patent license you grant is automatically extended to all recipients of the covered
work and works based on it.
A patent license is "discriminatory" if it does not include within the scope of its
coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or
more of the rights that are specifically granted under this License. You may not
convey a covered work if you are a party to an arrangement with a third party that
is in the business of distributing software, under which you make payment to the
third party based on the extent of your activity of conveying the work, and under
which the third party grants, to any of the parties who would receive the covered
work from you, a discriminatory patent license (a) in connection with copies of the
covered work conveyed by you (or copies made from those copies), or (b)
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NSA320 User's Guide