Editors BP draft document Copyright Clarification

Hi Everyone,
Out of curiosity, can anyone please explain why the current Editors BP draft document [0] has the following copy right?
Copyright<http://www.w3.org/Consortium/Legal/ipr-notice#Copyright> © 2014-2015 W3C<http://www.w3.org/>® (MIT<http://www.csail.mit.edu/>, ERCIM<http://www.ercim.eu/>, Keio<http://www.keio.ac.jp/>, Beihang<http://ev.buaa.edu.cn/>), All Rights Reserved. W3C liability<http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer>, trademark<http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks> and document use<http://www.w3.org/Consortium/Legal/copyright-documents> rules apply.

Thanks
Lewis

[0] http://w3c.github.io/dwbp/usecasesv1.html

Dr. Lewis John McGibbney Ph.D., B.Sc., MAGU
Engineering Applications Software Engineer Level 2
Computer Science for Data Intensive Systems Group 398M
Jet Propulsion Laboratory
California Institute of Technology
4800 Oak Grove Drive
Pasadena, California 91109-8099
Mail Stop : 158-256C
Tel:  (+1) (818)-393-7402
Cell: (+1) (626)-487-3476
Fax:  (+1) (818)-393-1190
Email: lewis.j.mcgibbney@jpl.nasa.gov

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