URI Schema ms-word makes no difference between open-for-view and open-for-edit

Hello,
we need for our intranet some hyperlinks to Word documents, which are generated dynamically from an other system. the documents are located on a network drive.
so far everything is working.
The problem is only
<a href="ms-word:ofv|u|file://///server/path/document.docx">view</a>
<a href="ms-word:ofe|u|file://///server/path/document.docx">edit</a>
these two lines behave the same.
according to Microsoft office-uri-schemes
ofv is open for view and
ofe is open for edit
but thats not working this way.
Both can change the document and by click on Save it is overwriten.
Is there any way to open the documents in read-only, view or at least like a new document (with no reference to the original one), so saving will not overwrite the original?
Thank you
We have installed Office365.