[Zope] Zope hurt by Interwoven patent?

Does anyone know whether (and how) Zope itself and Zope users can have problems with the new Interwoven patent? http://slashdot.org/article.pl?sid=03/02/25/1736237 Crucial part: The claims include, 'The use of a hierarchical file system and an object repository for representing and hosting content and its structure,' and 'The combined concepts of file history, versioning, comparison, and merging as it relates to content, provide an archive of all individual changes as well as collections of changes so they can be versioned and audited.'