Call for Exclusions: Page Visibility Level 2

Dear Advisory Committee representative,

This is a W3C Patent Policy Call for Exclusions for the following
Recommendation Track document:

- Page Visibility Level 2
   (https://www.w3.org/TR/2017/CR-page-visibility-2-20170328/),
   exclusion opportunity ending on 27 May 2017 23:59 UTC

This specification was produced by the Web Performance Working Group.

If you do not wish to exclude patent claims during this exclusion
opportunity, no further action is required. Member participants who think
their organization may have patent claims to exclude should contact their
Advisory Committee Representative.

This Recommendation Track document is being developed under the 2017 W3C
Process Document (since 2014, it combines former Last Call and Candidate
Recommendation requirements under the single label "Candidate
Recommendation."  For more information, see:
https://www.w3.org/wiki/ProcessTransition2015)

Participants made a Royalty-Free licensing commitment upon joining this
Working Group. With the publication of this document, per section 4.1 of
the Patent Policy [1], Participants have an opportunity until 27 May 2017
23:59 UTC to exclude patent claims reading on this Candidate
Recommendation. In this exclusion opportunity, exclusions are limited to
matter in the Candidate Recommendation that was not present or apparent in
this draft:
https://www.w3.org/TR/2016/CR-page-visibility-2-20161122/


Excluded claims are not subject to the licensing requirements of the W3C
Patent Policy for this document. For more information about exclusions,
please see
http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Exclusion

To make exclusions, please use the following form:
https://www.w3.org/2004/01/pp-impl/45211/exclude

Summary information for this group related to the W3C Patent Policy is
available at:
http://www.w3.org/2004/01/pp-impl/45211/status

If you have any questions or need further information, please contact,
for the Web Performance Working Group:
  * Philippe Le Hégaret at plh@w3.org
  * Xiaoqian Wu at xiaoqian@w3.org

For more information on the W3C Patent Policy and patent claim
exclusions, see:
http://www.w3.org/2003/12/22-pp-faq

Thank you,

For Tim Berners-Lee, W3C Director;
Xueyuan Jia, W3C Marketing & Communications

[1] http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-exclusion-with