[repost.. sorry hit send too fast

]
Ok I know this is not an MSDN newsgroup, but still hope that somebody here
can answer this question.
Suppose somebody makes a wireless router based on "open source" and to be
licensed under GPL.
This router should have "virtual AP" capability: one physical radio has
several
different visible SSIDs.
Are they allowed to use the WPS Information element, as documented in MSDN :
http://msdn2.microsoft.com/en-us/library/ms818947.aspx
Is this Information element owned by Microsoft or Cisco?
What routers and access point on sale (besides Cisco's) use this IE?
Thanks,
-- PA