You can create a custom publish filter method to only publish objects that meet a specific criteria. For example, the following article gives an example of how to only publish EPM Docs at a particular lifecycle state:
http://www.ptc.com/appserver/cs/view/solution.jsp?n=CS98475
Additionally, you may want to take a look at this article for an explanation of the different filter method properties in the wvs.properties:
http://www.ptc.com/appserver/cs/view/solution.jsp?n=CS39455
Additional example methods can be found in the com.ptc.wvs.server.publish.EpmDocumentPublishFilters class in 10.1